Number System, Problems on Number

Find the missing numeral: (? - 2763)/86 × 13 = 208

The sum of the squares of three numbers is 532 and the ratio of the first and the second as also of the second and the third is 3:2. Then the first number is -

If 1/5 : 1/N = 1/N : 1/1.25, then the value of N is? 

3640 ÷ 14 × 16 + 340 = ?

The average of the two numbers is 6.5 and square root of their product is 6. What are the numbers?

The three rational numbers between 3 and 4 are :

Chose the pair of numbers which comes next: 75, 65, 85, 55, 45, 85, 35, _______

One number is 3 more than 2 times of another number. Their sum is 21. Find the numbers.

The sum of four consecutive multiples of 4 is 200. What is the largest number?

Rahim ranks seventh from the top and twenty-sixth from the bottom in class. How many students are there in the class?

x, y are positive integers. When x is divided by y, the remainder is 5. If x/y=5.20, what is the value of x?

The average of 6 numbers is 25. If 3 more numbers, with an average of 22 are added to these numbers, what will be the average of the combined 9 numbers?

A is 3 years older than B and 3 years younger than C. B and D are twins. How older is C than D?

One-third of Ratan's investment in National Savings Certificate is equal to one-half of his investment in FDR. If he has Tk. 1,50,000 as total investment. how much he invested in savings certificate?

85% of a number is added to 24, the result is the same number. Find the number?

If 738A6A is divisible by 11, then the value of A is:

Mamun bought 50 shares at Tk. 60, and 2 months later, he purchased 25 shares at Tk 56, at what price should he purchase 25 additional shares in order to have an average price of Tk 58 per share?

If a = m - 1, then which of the following is true when m = 1/2

In a sequence of 8 consecutive integers, how much greater is the sum of the last four integers than the sum of the first four integers?

A certain animal in the zoo has consumed 39 pounds of food in six days. If it continues to eat at the same rate, in how many more days will its total consumption be 91 pounds?