উত্তর
ব্যাখ্যা
- অপরদিকে, ১৯৩৮ সালে প্রবোধচন্দ্র বাগচী চর্যাপদের তিব্বতী ভাষার অনুবাদ আবিষ্কার করেন।
উৎসঃ বাংলা ভাষা ও সাহিত্য জিজ্ঞাসা, ড. সৌমিত্র শেখর।
BIBM · ২ ডিসেম্বর, ২০২২ · ৯৯ প্রশ্ন
রমেশচন্দ্র দত্ত (১৮৪৮-১৯০৯) :
- তিনি লেখার কাজকে তাঁর ’প্রথম প্রেম’ হিসেবে অভিহিত করেন।
- তাঁর প্রথম লেখা Three Years in Europe ১৮৭২ সালে প্রকাশিত হয়।
- তাঁর দ্বিতীয় লেখা Bengal Peasantry গ্রন্থ ১৮৭৫ সালে প্রকাশিত হয়।
- দুবছর পর প্রকাশিত হয় Bengali Literature শীর্ষক বাংলা সাহিত্যের ইতিহাস।
• তিনি চারটি ঐতিহাসিক উপন্যাস রচনা করেন: বঙ্গ বিজেতা, মাধবী কঙ্কণ, রাজপুত জীবন সন্ধ্যা ও মহারাষ্ট্র জীবন প্রভাত।
প্রথম দুটি উপন্যাসে তিনি সম্রাট আকবর কর্তৃক বাংলা বিজয়, তৃতীয়টিতে আকবরের বিরুদ্ধে রানা প্রতাপ সিংহের সংগ্রাম এবং চতুর্থটিতে শিবাজীর নেতৃত্বে মারাঠা শক্তির অভ্যুদয়ের কাহিনী বর্ণনা করেন। সব কটি উপন্যাসই ১৮৭৯ সালে প্রকাশিত হয়।
মুঘল সাম্রাজ্যের শতবর্ষের ইতিহাসের ঘটনা নিয়ে এই উপন্যাসগুলি রচিত হয়েছিল বলে এগুলি একসাথে শতবর্ষ (১৮৭৯) নামে সঙ্কলিত হয়েছিল ।
• তিনি দুটি সামাজিক উপন্যাস সমাজ (১৮৮৫) ও সংসার (১৮৯৩) রচনা করেন।
প্রথমটিতে হিন্দুসমাজে বিধবা বিবাহ এবং দ্বিতীয়টিতে বিভিন্ন বর্ণের মধ্যে বৈবাহিক সম্পর্কের পক্ষে মত প্রকাশ করেন।
বাংলা সাহিত্যে তাঁর অপর একটি অবদান হচ্ছে বাংলায় ঋগ্বেদ-এর অনুবাদ (১৮৮৫)।
- ১৮৯৮ ও ১৮৯৯ সালে তিনি ইংরেজিতে যথাক্রমে রামায়ণ ও মহাভারত-এর কাব্যানুবাদ করেন।
- ১৮৯৪ সালে তিনি ইংরেজি পদ্যে রচিত তার Lays of Ancient India গ্রন্থ প্রকাশ করেন।
- এ সময়ে তাঁর অপর অবদান হলো History of Civilisation in Ancient India.
সূত্র: বাংলাপিডিয়া; বাংলা সাহিত্যের ইতিহাস, মাহবুবুল আলম ও লাল নীল দীপাবলী, হুমায়ুন আজাদ।
Question: 212 + 212 + 212 + 212 = ?
Solution:
212 + 212 + 212 + 212
=212(1 + 1 + 1 + 1)
=212 × 4
=212 × 22
=212 + 2
=214
Question: Which of the following is not equal to 0.0675?
Solution:
0.0675 = 67.5/1000 = 67.5/103 = 67.5 × 10-3
0.0675 = 6.75/100 = 6.75/102 = 6.75 × 10-2
0.0675 = 0.675/10 = 0.675/101 = 0.675 × 10-1
লাইভ পরীক্ষার প্রশ্নের গ) অপশনে 0.675 এর পরিবর্তে 0.625 ভুলক্রমে চলে এসেছে।
মূল পরীক্ষার সাথে সামঞ্জস্য রেখে তাই সঠিক উত্তর হিসেবে অপশন ঘ) নেয়া হয়েছে।
Question: If (3x + 2y) = 8 and (2x - 2y) = 2, then find the value of (4 - 3x)
Solution:
3x + 2y = 8........(1)
(2x - 2y) = 2
2(x - y) = 2
x - y = 1
x = 1 + y ..............(2)
x এর মান (1) নং এ বসিয়ে পাই
3x + 2y = 8
3(1 + y) + 2y = 8
3 + 3y +2y = 8
3 + 5y = 8
5y = 8 - 3
5y = 5
y = 1
y এর মান (2) নং এ বসিয়ে পাই
x = 1 + y
x= 1 + 1
x = 2
4 - 3x = 4 - 3 × 2 = 4 - 6 = - 2
Question: In a group of buffaloes and ducks, the number of legs is 24 more than twice the number of heads. What is the number of buffaloes?
Solution:
Let
the number of buffaloes be x and the number of ducks are y.
Now
(4x + 2y)= 24 + 2(x + y)
(4x + 2y) = 24 + 2x + 2y
4x + 2y - 2x - 2y = 24
2x = 24
x = 12
So, here we get the number of buffaloes in the group = 12.
Question: An employee may claim Tk. 7 for each kilometer when he travels by taxi and Tk. 6 for each kilometer when he drives his own car. If in one week he claimed Tk. 900 for travelling 135 km, how many kilometers did he travel by taxi?
Solution:
Let the distance travelled by taxi x km
Let the distance travelled by own car 135 - x km
Now
7x + 6(135 - x) = 900
7x + 810 - 6x = 900
x + 810 = 900
x = 900 - 810
x = 90
Question: A school has a total of 90 students. There are 30 students taking Physics, 25 taking English, and 13 taking both. Approximately what percentage of the students is taking either Physics or English?
Solution:
Students taking physics n(A) = 30 (these 30 include those 13 that take both)
Students taking english n(B) = 25 (these 25 also include those 13)
Students taking both n(A ∩ B) = 13
Students taking either Physics or English n(A ∪ B) = ?
We know
n(A ∪ B) = n(A) + n(B) - n(A ∩ B)
= 30 + 25 - 13 = 42
Required percentage = (42/90) × 100
= 46.66 %
= 47% approx.
Question: The average temperature for the first 4 days of a week is 40.2°C and that of the last 4 days is 41.3°C. If the average temperature for the whole week is 40.6°C, then the temperature on the fourth day is
Solution:
Temperature on the fourth day
= [(40.2 × 4 + 41.3 × 4) - (40.6 × 7)]° C
= 41.8° C
Question: There are two numbers where the sum of twice the first number and thrice the second number is 100. And the sum of thrice the first number and twice the second number is 120. Which is the largest number?
Solution:
Let the first number be x and second number be y
Then,
2x + 3y = 100.....(1)
3x + 2y = 120.......(2)
(1) × 2 - (2) × 3 ⇒
4x + 6y - 9x - 6y = 200 - 360
- 5x = - 160
x = 32
From (1) we get
2x + 3y = 100
2 × 32 + 3y = 100
64 + 3y = 100
3y = 100 - 64
3y =36
y = 12
Hence the largest number is 32.
Question: The interest charged on a loan is 'P' per Tk, 1000 for the first quarter (3 months), and 'Q' per Tk. 1000 for each month after the first quarter. How much interest will be charged for the first year on Tk 10,000?
Solution:
For the first 3 months interest of Tk 10000 = 10P
For the 9 months interest of Tk 10000 = 10 × 9Q
Total interest = 10P + 10 × 9Q
=10(P + 9Q)
Question: X sells an item to Y at a profit of 28% on his cost and sells the same item to Z at a loss of 25% on his cost. If Y thus sold the item to Z a Tk. 2 less than the item to X, then what is the cost of the item to X?
Solution:
Assume the initial price of 100
X sold to Y at 28% profit, then the price is at 128
Y sold to Z at 25% loss, then the price is 128 × 75% = 96
The difference from X to Z is = (100 - 96) = 4, which by the question supposed to be 2
The initial price is twice assumption is twice than supposed to (4 is 2 x 2),
we need to divide the initial assumption by 2 to get to the answer: 100/2 = 50
Question: A salesman receives daily wage of Tk. 250 and earns a commission of 15% on all sales he makes. How much taka worth of sales does he need to make in order to bring his total daily income of Tk. 1000?
Solution:
দৈনিক মোট আয় করতে হবে = 1000 টাকা
দৈনিক মজুরি =250 টাকা
অবশিষ্ট= (1000 - 250) টাকা
= 750 টাকা
15% সেলস কমিশন = 750 টাকা
1% সেলস কমিশন = 750/15 টাকা
100% সেলস কমিশন = (750 × 100)/15 টাকা
= 5000 টাকা
Question: A train travels 360 km at a uniform speed. If the speed had been 5 km/h more, it would have taken 1 hour less for the same journey. Find the speed of the train.
Solution:
Given distance=360 km.
Let the speed of the train be x km/hr.
Speed when increased by 5 km/hr =(x + 5) km/hr
(360/x) - {360/(x + 5)}= 1
[360x + 1800 - 360x]/x(x+5)=1
1800/x2 + 5x= 1
x2 + 5x = 1800
x2 + 5x - 1800 = 0
x2 + 45x - 40x - 1800=0
x(x + 45) - 40(x + 45)=0
(x- 40)(x + 45)=0
x = 40, - 45
Question: A man's investment doubles in every 5 years. If he invested Tk. 5,000 in each of the years 2010, 2015, 2020 then what will be the amount received by him in 2025?
Solution:
Given,
Investment doubles every 5 years.
He invested Tk. 5000 in each of the years 2010, 2015, 2020 and 2025.
Now, he invested 5000 in 2010 so the amount for 2010 is 5000
In 2015 the amount gets double the amount become 10000 and then he again invest 5000 so the total amount of the year 2015 is 15000.
In 2020 the amount gets double the amount become 30000 and then he again invest 5000 so the total amount of the year 2020 is 35000.
In the year 2025 the amount gets double the amount become 70000 finally, the amount in the year 2025 is 70000.
Hence, '70000' is the correct answer.
Question: In a family, the father took 1/4 of the cake and had 3 times as much as each of the other members had. The total number of family member is-
Solution:
Let the total number of the family member excluding father be 'x' and the amount of cake be 100 units
Share of cake taken by father = 100 × 1/4 = 25 units
Remaining share of cake taken by family member = (100 - 25)/x
Now
25 = 3 × 75/x
25x = 3 × 75
x =(3 × 75)/25
x = 9
∴ Total number of the family members including father = 9 + 1 = 10
Question: In 10 years, A will be twice as old as B was 10 years ago. If A is now 9 years older than B, then the present age of B is-
Solution:
Let the present age of B be x years.
Then, the present age of A would be (x + 9) years.
After 10 years, the age of A would be (x + 9 + 10) = (x + 19) years and before then years, the age of B was (x - 10) years.
Now,
(x + 19) = 2(x - 10)
x + 19 = 2x - 20
x = 19 + 20 = 39 years
The present age of B is 39 years
Question: A natural number when increased by 12, equals 160 times reciprocal. The number is-
Solution:
Let the number be x. Then,
x + 12 = 160 × (1/x)
x2 + 12x - 160 = 0
x2 + 20x - 8x - 160 = 0
x(x + 20) - 8(x + 20) = 0
(x + 20)(x - 8) = 0
x= - 20, 8
Question: The mean of the data set of 1000 items is 5. From each item 3 is subtracted and then each number is multiplied by 2. The new mean will be -
Solution:
The mean of data set of 1000 times is 5
∴ Sum of data set =1000×5=5000
Each item 3 is subtracted and then each number is multiplied by 2
∴ New sum of data =[5000 - (3×1000)] × 2
= (5000 - 3000)× 2
= 4000
∴ New mean =4000/1000= 4
Question: The measurement of a rectangle is 16 feet by 12 feet. What is the area of the smallest circle that can cover this rectangle entirely (so that no part of the rectangle is outside the circle)?
Solution:
Diameter of the circle = √(162+122)
= √(256 +144)
= √400
= 20feet
Radius of the circle=20/2 = 10 feet
Area of the circle = π × 102= π ×100=100π sq feet.
Question: The perimeter of rectangle is 200 meters. The breadth is 3/7 part of the length. What is the length?
Solution:
Let
Breadth of rectangle = 3x
Length of rectangle = 7x
Now
2(3x + 7x) = 200
2× 10x = 200
20x = 200
x = 10
Length of rectangle = 7 × 10 = 70m