Number System, Problems on Number

What is the smallest number of apples that can be distributed equally (without cutting any apple) among 6,10,14 and 18 boys?

Which of the following CANNOT be a value of 1/(x+1)?

Which of the following numbers cannot be the last digit of a squared number? 

Two fifth of one fourth of three-seventh of a number is 15. What is the half of the number?

The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?

Eight people are planning to share equally the cost of a rental car. If one person withdraws from the arrangement and the others share equally the entire cost of the car, then the share of each of the remaining persons will be increased by-

0.1 + 0.1² + 0.1³ = ?

Mina has 3 Taka more than Babu has, but 5 Taka less than Shelly has. If Mina has x taka, how much money Shelly and Babu have althogether?

When the integer n is divided by 4. the quotient is p and the remainder is 1 but when it is divided by 6 the quotient is q and the remainder is 5. The value of 3q - 2p is

If x is the difference if the squares of two consecutive even numbers, which of the following numbers is a divisor of x?

If the ratio of numbers is 3: 4 and their least common multiple is 60, then the numbers are-

8597 - ? = 7429 - 4358

x is a two digit number. The digits of the number differ by 6 and the square of the digits differ by 60. Which one of the following could x equal?

The difference of squares of two consecutive odd integers is divisible by which of the following integers?

The pair of co-prime numbers is ____?

Find the remainder when 7¹¹ + 7¹¹¹ + 7¹¹¹¹ is divided by 8.

Which of the following numbers is divisible by 3?

A shopkeeper has sufficient money to buy 50 books. On reduction in the price of each book by Tk. 4, he could buy 10 books more. How much money does he has?

Find the value of 6(-3)(1/3)(-0.25)

Which of the following is divisible by 2 and 7?