ব্যাংক মডেল টেস্ট [সাপ্তাহিক]

Letter of License - অনুজ্ঞাপত্র। 
Letter of indication - নিদর্শনপত্র। 
Letter of instruction - নির্দেশপত্র। 
Letter of introduction - পরিচয়পত্র। 
 Letter of renunciation - স্বত্বত্যাগপত্র। 

উৎস: বাংলা একাডেমি প্রশাসনিক পরিভাষা।

'পশ্বধম' শব্দের প্রমিত উচ্চারণ হলো পোশ্‌শোধম্‌ 
পশ্বধম (বিশেষ্য)
অর্থ:
পশুর চেয়েও অধম।

{(তৎসম বা সংস্কৃত) পশু+অধম}

উৎস: বাংলা একাডেমি অভিধান।

আহসান হাবিব মূলত কবি ও সাংবাদিক ছিলেন। 'মেঘ বলে চৈত্রে যাব' তাঁর একটি কাব্যগ্রন্থ।
তাঁর রচিত অন্যান্য কাব্যগ্রন্থঃ
- রাত্রিশেষ (প্রথম প্রকাশিত),
- ছায়া হরিণ,
- সারা দুপুর,
- আশায় বসতি,
- দুই হাতে দুই আদিম পাথর,
- প্রেমের কবিতা,
- বিদীর্ণ দর্পণে মুখ ইত্যাদি।

উৎসঃ বাংলা ভাষা ও সাহিত্য জিজ্ঞাসা, ড. সৌমিত্র শেখর।

পোঁ ধরা (ক্রিয়া) - কোনো ব্যাপারকে অন্ধভাবে সমর্থন করা; মোসাহেবি করা (ব্যঙ্গার্থ); চাটুবৃত্তি; তোষামোদ; চামচে হওয়া।
কেউটে ধরা (ক্রিয়া) কঠিন বা বিপজ্জনক কাজ করা।
গলা বা গালধরা (ক্রিয়া) ওল কচু প্রভৃতি খাওয়ার দরুন মুখের ভিতরে চুলকানি ও যন্ত্রণা অনুভব করা।
ছেঁকেধরা (ক্রিয়া) ঘিরে ধরা; চারদিক থেকে অনেকে মিলে ব্যতিব্যস্ত করা।

উৎসঃ বাংলা একাডেমী অভিধান।

বৃক্ষ শব্দের সমার্থক শব্দ:
হলো গাছ, পাদপ, দ্রুম, তরু, বিটপী, শাখী, পণী, শৃঙ্গী, শিখরী, মহীরুহ ইত্যাদি।
অরণ্য - শব্দের সমার্থক শব্দ:
বন, জঙ্গল, অটবি, কানন, বিপিন, গহন, কুঞ্জ, কান্তার, উপবন, বনানী ইত্যাদি।

উৎসঃ বাংলা ভাষা ও সাহিত্য জিজ্ঞাসা-ড. সৌমিত্র শেখর, বাংলা একাডেমি অভিধান

The correct answer is 'into, at, for'.
into: One of the main uses of the preposition 'into' is to indicate movement towards the inside of a place.
Example:
The children jumped into the lake for a swim.

​at: We use 'at' to talk about points in time, ages, and some periods of time.
Example:
I was up at 6 AM this morning. (a point in time)
At 12 noon, all the bells rang out. (a point during the day).
They all get dressed up at Halloween. (a point on the calendar)
Many children leave school at 16. (referring to a specific age)
We use 'at' to describe a position or location seen as a point.
Example:
There was no one at the information desk. (location as a point).

For: To indicate the (reason or because of).
Example: I am really happy for you.
To indicate the duration of time.
Example: I attended the session for one year only.
To specify the use of something).
Example: She is preparing for her final exam.

Thus, the correct prepositions to fill in the blanks are: 'into, at, for'.

Here, passive voice is given.
So, we change it into an active voice.
Since simple present tense is used, thus the tense remains the same while changing voice.
Hence, option 4 is incorrect.
Now, the word 'taste' is used as a verb. Thus, option 2 is the correct answer.

Nostalgia: Anything or feeling that happened in the past. Anticipation: The fact of seeing that something might happen in the future.
So, we can write Nostalgia is to anticipation as past is to future.
Therefore, the correct statement is: Nostalgia is to anticipation as past is to future.

Let's understand the meaning of the keyword 'Negation'.
Negation: the contradiction or denial of something.
Let's explore options: ​
Option 1 states that P does not marry Q which is a correct negation but it also states that X marries Y which is not a negation.
Therefore, option 1 is incorrect.
Option 3 states that X does not marry Y which is a correct negation but it also states that P marries Q which is not a negation.
Therefore, option 3 is incorrect.
Option 4 states that P marries Q and X marries Y, it is not a negation, therefore, option 4 is incorrect.
Option 3 states that neither P marries Q nor X marries Y, which is a correct negation.
Thus, the correct answer is option 2.

When two qualities of the same noun are compared, more + positive degree adjective is used.
In this sentence, we are comparing the two qualities of the England fast bowler i.e. 'fast' and 'accurate' for such comparison we will use comparative degree ( more + positive degree adjective ).
∴ Use ‘more fast’ rather than ‘faster’.
Let's see an example:
Incorrect- She is prettier than wise.
Correct- She is more pretty than wise.

'The no of' is singular and takes a singular verb.
Thus, 'the number of candidates is staggering' is correct.
Similarly, 'A no of' is plural and takes a plural verb.
Thus, 'a number of candidates are staggering' is correct.
Thus, both statement i and ii is correct.

In the given question 'Indisputable' is different from the rest of the words.
Indisputable (Adjective):
Meaning - Unable to be challenged or denied.
Example: Sadly, political fluff and rhetoric again ignores clear indisputable facts.
Whereas, 'Uncertain, Dubious, and Doubtful are synonyms.
Therefore, the correct answer is Option 1.

Source: Oxford Dictionary

The word 'Inception' means 'the beginning of an organization or official activity.
The synonyms of the word 'Inception':
establishment, institution, foundation, founding, formation, initiation, setting up, origination, constitution, inauguration, opening
beginning, start, starting point, outset, birth, dawn, genesis, origin, rise, debut.
From the synonym of the given word, we can say that the word 'start' is the most similar in meaning.

Required average speed
= (3 × 15 × 20 × 30)/(15 × 20 + 20 × 30 + 30 × 15)
= 20 km/hour
----------------------------------------------------------------
Alternative way:
Distance 30 km, Speed 30 km/h, Time 1 Hour
Distance 30 km, Speed 15 km/h, Time 2 Hours
Distance 30 km, Speed 20 km/h, Time 1 hour & 30 minutes.
Total Distance 90 km, Total Time 4.5 Hours,
Average Speed 90/4.5 km/h = 20 km/h
--------------------------------------------------------------
Alternative way:
Let, equal distances travelled by the man be ’s’.
Time taken to travel first distance, s at 15 kmph = s/15
Time taken to travel second distance, s at 20 kmph = s/20
Tine taken to travel last distance, s at 30 kmph = s/30
Therefore, total time taken by the man = s(1/15 +1/20 +1/30)
Total distance travelled by the man = 3s
Hence, average speed of the man
= 3s / [ s(1/15 +1/20 +1/30) ] =3/(1/15 +1/20 +1/30)
= 20 kmph
---------------------------------------------------------------
Alternative way:
Avg speed formula= 3 ÷ (1/x +1/y +1/z)
Now we have 1/30 +1/20 +1/15
L.C.M. of 20, 30 and15 is 60.
Then (3 + 4 + 8)/60=9/60 = 3/20
From above formula, average speed = 3 ÷ 3/20=20 km/h

In this type of question, We need to find out the L.C.M. of the given numbers.
L.C.M. of 12, 15, 18 and 20 = 180 = 3×3×2×2×5
L.C.M. must be a perfect square. To make the L.C.M. a perfect square, We have to multiply it by 5,
The required number of soldiers = 3×3×2×2×5×5 = 30² = 900

Here, n = Number of terms
Sum of all terms = (n/2) ( first term + last term ) 
                           = (18/2) ( - 30 + 36)
                           = 9 × 6
                           = 54

Let the Cost Price be100 taka
selling price = 100 + 100 × 12% = 112 taka
After 60% discount on the printed price, then remaining = (100 - 60)% = 40%
If the market price is x, then 40% of x = 112
x = 112 × 100/40 = 280 taka
Required ratio = 100 : 280 = 5 : 14
--------------------------------------------------------------------------------------
Alternative way(easy way):
Let cost price be y taka
Profit = 12% of y taka = 12y/100 taka
Selling price = (y + 12y/100) taka
                     = 112y/100 taka
Discount = 60% of printed price
Selling price = printed price - discount
112y/100 = printed price - 60% of printed price
112y/100 = (1 - 60/100) × printed price
printed price × 40/100 = 112y/100
printed price = 112y/40
Cost price : Printed Price = y : 112y/40
                                         = 40 : 112
                                         = 5 : 14

(A + B)'s one day's % work = 100/50 = 2%
B's one day's % work = 100/100 = 1%
A's one day's % work = 2 - 1 = 1%
Thus, A need 100/1 or 100 days to complete the work.
------------------------------------------------------------
Alternative way:
A and B complete a work in = 50 days
One day's work of (A + B) = 1/50 portion of work
B complete the work in = 100 days;
One day's work of B = 1/100 portion of work
Then, A's one day's work = 1/50 - 1/100 = 1/100
Thus, A can complete the work in 100 days.

Suppose the pot initially contains 7x and 5x of mixtures A and B respectively.
Quantity of A in mixture left = 7x - 7/12 × 12
                                               = 7x - 7
Quantity of B in mixture left = 5x - 5/12 × 12
                                              = 5x - 5
According to the question,
(7x - 7) / {(5x - 5) + 12} = 7/9
or, x = 4
So, the pot contained (4 × 7) liters or 28 liters of A

Let their investments be x taka for 8 months,
                                        y taka for 6 months
                                 and z taka for 4 months respectively.

Then, 8x : 6y : 4z = 3 : 4 : 5.
or, 8x/6y = 3/4
or, y = 16x/9
and 8x/4z = 3/5.
or, z = 10x/3

x : y : z = x : 16x/9 : 10x/3 = 9 : 16 : 30

Let AC be the poll.
B be the position of the bus.
∴  BC = the distance of the bus from the foot of the poll.
Given that
height of the poll, AC = 80 m
Angle of depression, ∠DAB = 30°
∠ABC = ∠DAB = 30° (because DA || BC)


tan30 = AC/BC 
or, 1/√3 = 80/BC
∴ BC = 80√3 = 138.4 m

Let the ages of children be x, (x + 5), (x + 10), (x + 15), (x + 20), (x + 25)  and (x + 30) years.
Then, x + (x + 5) + (x + 10) + (x + 15) + (x + 20) + (x + 25) + (x + 30)   = 154
or, 7x + 105 = 154
or, 7x = 49
or, x = 7
∴ the age of the youngest child is 7 years.

Maximum value of (2sinθ+3cosθ) = √(2² + 3²) = √13

Total number of balls = 2 + 3 + 2 = 7
If n(S) be the number of ways of drawing 2 balls out of 7
then n(S) = ⁷C₂ = 21
If n(E) be the number of ways of drawing 2 balls out of (2 + 3) balls
then n(E) = ⁵C₂ = 10
The probability that none of the balls drawn is white = 10/21

Speed of boat in still water = (18 + 12)/2 = 15 km/hr  [ speed = distance/time ]
Time taken by the boat in still water = 45/15 = 3 hours

Square root of 3 : 

     = 1.73

Let the ten's digit be x and unit's digit be y.
Then, (10x + y) - (10y + x) = 45
⇒ 9(x - y) = 45
⇒ x - y = 5

2 ( length + breadth ) / length = 7/2
or, ( length + breadth ) / length = 7/4
or, 4 × breadth + 4 × length  = 7 × length 
∴ length = 4 × breadth / 3

Area = 0.12 square meter = 0.12 × 100 × 100 square centimeter
∴ length × breadth = 1200 square centimeter
or, breadth × 4 × breadth / 3 = 1200
or, breadth ² = 900 = 30² square centimeter
∴  breadth = 30cm

Here, principle, P = 30,000 taka
 rate of interest, r = 7%
                             = 7/100
      and interest, I = 4347 taka
∴ Amount, C = principle + interest
                      = (30,000 + 4347) taka
                      = 34347 taka

Let the time be n years
We know, C = P( 1 + r)ⁿ
∴ 34347 = 30000 (1 + 7/100)ⁿ 
or, 34347/30000 = (107/100)ⁿ 
or, 11449/10000 = (107/100)ⁿ 
or, (107/100)² = (107/100)ⁿ
∴ n = 2 
Hence the period 2 years
--------------------------------------
Alternative way:
(principle + interest) = principle ( 1 + rate of interest)^time
30,000 + 4347 = 30,000 ( 1 + 7%)ⁿ
34347 = 30,000 ( 1 + 7/100)ⁿ
n = 2

Speed = 90 km/hr
            = 90 × 5/18 m/s
            = 25 m/s
Total distance = (240 + 260) m
                        = 500 m
Required time = (500m) / (25m/s)
                        = 20 seconds
[ Time = Distance / Speed ]

Simple interest for 3 years = (15880 −13675) taka
                                            = 2205 taka
Simple interest for 5 years = 2205 × 5/3 taka
                                            = 3675 taka
Principle = (13675 - 3675) taka
                = 10000 taka
Therefore, rate = 100 × 3675/(10000 × 5) %
                         = 7.35%

A : B = 1/2 : 3/8 = 4 : 3 = 8 : 6
B : C = 1/3 : 5/9 = 3 : 5 = 6 : 10
C : D = 5/6 : 3/4 = 10 : 9
A : B : C : D = 8 : 6 : 10 : 9
-----------------------------------
Alternative way:

A : B = 1/2 : 3/8
         = (1 × 8)/2 : (3 × 8) /8
         = 4 : 3 
         = 8 : 6
B : C = 1/3 : 5/9
          = (1 × 9)/3 : (5 × 9)/9
          = 3 : 5
          = (3 × 2) : (5 × 2)    
          = 6 : 10
C : D = 5/6 : 3/4
          = (5 × 12) /6 : (3 × 12)/4
          = 10 : 9
A : B : C : D = 8 : 6 : 10 : 9

Number of 2 in square root is 5
2⁵ = 32
2⁵ - 1 = 31
Required solution: 
2^{(32 - 1)/(32)}
= 2^31/32
---------------------------------------
Alternative way:
√ 2 [ √ 2 { √ 2 (√ 2 (√2 ) ) } ]
= √ 2 [ √2 { √2 ( √ ( 2 × 2^1/2) ) } ]
= √ 2 [ √2 { √2 ( √ ( 2^3/2) } ]
= √ 2 [ √2 { √ ( 2 × 2^3/4) } ]
= √ 2 [ √2 { √ 2^7/4} ]
= √ 2 [ √ {2 × 2^7/8} ]
= √ 2 × √ 2^15/8
= √ (2 × 2^15/16)
= √ 2^31/16
= 2^31/32

The performance of cache memory is decided by hit ratio.
The Cache Hit Ratio is the ratio of the number of cache hits to the number of misses, usually expressed as a percentage.
Miss Ratio = 1 – Hit Ratio

The correct answer is Random access, volatile, and a semiconductor memory.
RAM stands for Random Access Memory.
Random-access memory is a form of computer memory that can be read and changed in any order, typically used to store working data and machine code. A random-access memory device allows data items to be read or written in almost the same amount of time irrespective of the physical location of data inside the memory.
In contrast, with other direct-access data storage media such as hard disks, CD-RWs, DVD-RWs, and the older magnetic tapes.

The two widely used forms of modern RAM are static RAM (SRAM) and dynamic RAM (DRAM).
In SRAM, a bit of data is stored using the state of a six-transistor memory cell.
DRAM stores a bit of data using a transistor and capacitor pair.
Read-only memory is a type of non-volatile memory used in computers and other electronic devices.
Data stored in ROM cannot be electronically modified after the manufacture of the memory device.

A combination of 16 bits is called a word.
The smallest unit of data in a computer is called Bit.
A bit has a single binary value which is either 0 or 1.
A byte is a unit of data that is eight binary digits long.

Evaluation                  Result
Step 1 :   256/8 = 32                32/4/2
Step 2 :    32/4 = 8                    8/2
Step 3 :       8/2 = 4                    4
The result on the evaluation of "256/8/4/2" in MS-Excel is 4.

An integrated circuit or monolithic integrated circuit is a set of electronic circuits on one small flat piece of semiconductor material, usually silicon.
Jack Kilby and Robert Noyce invented Integrated Circuits.
Hence, Option 2 is correct.
While at Fairchild, Noyce developed the integrated circuit.
The same concept has been invented by Jack Kilby at Texas Instruments in Dallas a few months previously.
In July 1959 Noyce filed a patent for his conception of the integrated circuit.
Jack Kilby of Texas Instruments patented the principle of integration, created the prototype ICs and commercialized them.
Kilby's invention was a hybrid integrated circuit (hybrid IC), rather than a monolithic integrated circuit (monolithic IC) chip.

In MS Word, the option of Font Colour allows us to change the colour of text in a word file.

MS PowerPoint, It is a presentation program used to present data and information by using text, diagrams with animation, images, and transitional effects in the form of slides.
It is developed by Robert Gaskins and Dennis Austin.
Ctrl + M It is a shortcut key to insert a blank slide after the currently selected slide.

The correct answer is Don.
The Anna Kournikova VBS.SST computer virus, informally known as "Anna," is a viral worm that uses Visual Basic to infect Windows systems when a user unwittingly opens an e-mail note with an attachment that appears to be a graphic image of Russian tennis star Anna Kournikova.
AIDS and Brain are also type of computer viruses.
AIDS is the first virus known to exploit the MS-DOS "corresponding file" vulnerability.

The Artificial Intelligence Engine 'Watson" belongs to IBM.
Watson is a question-answering computer system capable of answering questions.
This supercomputer is named for IBM's founder, Thomas J. Watson.

Data link layer:
Bridge works at the Data link layer.
Switch works at the Data link layer.
Bridge has single input and single output device so it also comes under 2 port device.
Network layer:
Router is mainly used at Network layer.
Physical layer:
Hub is mainly used at physical layer.
Repeater is mainly used at physical layer.
Data link is the correct answer.

Ping is a computer network administration utility used to test the reachability of a host on an Internet Protocol (IP).
In ping, there is no server that provides a service.
PING is a utility to check connectivity either between client-client or client-server.
Hence the correct answer is Ping.

Sustainable Development Goals (SDGs) and Bangladesh:
The government is working for the implementation of the environmental and climate
related goals and targets of SDGs.
Among 17 goals of SDGs, 3 goals are directly linked with
environment and climate. 
Source:  Bangladesh Economic review 2021

- বঙ্গবন্ধু শেখ মুজিবুর রহমান কৃষি বিশ্ববিদ্যালয় অবস্থিত গাজীপুরের সালনায়।
- - বঙ্গবন্ধু শেখ মুজিবুর রহমান বিশ্ববিদ্যালয় কিশোরগঞ্জ জেলায় অবস্থিত।
- বঙ্গবন্ধু শেখ মুজিবুর রহমান বিজ্ঞান ও প্রযুক্তি বিশ্ববিদ্যালয় অবস্থিত গোপালগঞ্জে।
- বঙ্গবন্ধু শেখ মুজিবুর রহমান মেরিটাইম বিশ্ববিদ্যালয় অবস্থিত ঢাকার রোকেয়ার স্মরণীতে।
- বঙ্গবন্ধু শেখ মুজিবুর রহমান ডিজিটাল বিশ্ববিদ্যালয় অবস্থিত গাজীপুরের কালিয়াকৈরে।
- বঙ্গবন্ধু শেখ মুজিবুর রহমান অ্যাভিয়েশন ও অ্যারো স্পেস বিশ্ববিদ্যালয় অবস্থিত লালমনিরহাটে।
- বঙ্গবন্ধু শেখ মুজিব মেডিক্যাল বিশ্ববিদ্যালয় অবস্থিত ঢাকার শাহবাগে।
(তথ্যসূত্র: বিশ্ববিদ্যালয় মঞ্জুরী কমিশন ওয়েবসাইট)

While the US is way ahead of China under the CO₂ per capita measurement, China is the world’s biggest emitter overall.
There’s also a huge difference in CO₂ emissions per person among the US states.
Wyoming has the highest CO₂ emissions per capita at 110 metric tons, while New York has the lowest with under 9 metric tons, according to US Energy Information Administration figures from 2015.
Source: weforum.org

The Geological Survey of Bangladesh (GSB) announced that they discovered the country’s first magnetic mine or iron ore at Dinajpur’s Hakimpur upazila.

“A 400-foot thick iron layer has been discovered at a depth of 1,330 feet and the layer stretches over an area of 6-10 square kilometers,” GSB’s Deputy Director Mohammad Masum said while making the groundbreaking announcement at a press conference in the north-western district.

Source: The Daily Star

SpaceX and Tesla CEO Elon Musk on October 31, 2021, said that he is willing to sell some Tesla stocks if the World Food Programme (WFP) shares a plan on how 2 percent of total wealth which is $6 billion could solve world hunger.

Uzbek President Shavkat Mirziyoyev has been re-elected for a second five-year term, winning 80.1% of the vote in Sunday's poll which Western observers said was not truly competitive despite improvements brought by recent reforms.

State Minister for Disaster Management and Relief Dr Enamur Rahman has said Bangladesh has adopted a 37 billion dollar programme for mitigation of climate change damages in the country’s coastal areas.

The statement gave the information while addressing a COP26 side event organised by the ministry in Glasgow on Thursday afternoon, according to a UNB report published on Friday.

Climate change-related incidents displace about 50,000 people every year in Bangladesh, the minister added.

In his speech at the event, Enamur said Bangladesh is widely considered as one of the most vulnerable countries to global climate change.

He said 30.7 million people were displaced due to natural disasters in 2020.

Source: The Financial Express

- Earthworms breathe through their skin.
- The air can pass easily through their skin which makes it moist & slimly.
- Small blood capillaries are present in the moist skin region where the exchange of gases occurs.
- The oxygen gets picked by the dissolved hemoglobin, and the carbon dioxide is removed from the body.

Different organisms use different organs for breathing.
- Fishes breathe through the gills,
- Earthworm uses their moist skin,
- Amphibians, Reptiles & Mammals breathe using vascularised bags called the lungs.
- Cockroaches & other insects breathe through the spiracles.

Vitamin K is a vitamin found in leafy green vegetables, broccoli, and Brussels sprouts.
In the body, vitamin K plays a major role in blood clotting.
So it is used to reverse the effects of “blood-thinning” medications when too much is given;
to prevent clotting problems in newborns who don’t have enough vitamin K, and to treat bleeding caused by medications.

The main constituent of cement is lime or CaO. Other chief components are as follows: