Number System, Problems on Number

The H.C.F and L.C.M of two numbers are 12 and 288 respectively. If one of the numbers is 96. Find the other.

A ferry can carry 24 buses or 36 cars at a time. If there are 18 buses on the ferry, how many cars can be loaded onto it?

The ratio of two numbers is 3 : 4 and their sum is 630. The smaller one of the two numbers is

If the sum of (3, 7 and x) is 18, then the average of (3, 7 and x) is

The sum of 3 consecutive integers is less than 75. What is the greatest possible value of the smallest one?

100 × 10 - 100 + 2000 ÷ 100 = ?

A number is decreased by 10% and then increased by 10%. The number of obtained is 10 less than the original number. What was the original number? 

The product P of two prime numbers is between 9 and 55. If one of the prime numbers is greater than 2 but less than 6 and the other is greater than 13 but less than 25, then P =

How many times does the digit '4' come to write numbers from 10 to 100?

The sum of twice a number and three times of 42 is 238. What is the sum thrice the number and two times of 42?

0.1 is how many times greater than 0.001?

What is 3% of 0.07?

28√x + 1,426 = three-fourths of 2984, find the value of x.

The sum of the square of a number and 12 times the number is - 27. What is the smaller possible value of his number?

If 3 less than twice the number is equal to 2 more than 3 times the number, then 5 less than 5 times the number is.

In a two digit number, the digit in the unit's place is two more than the three times of the digit in ten's place. If the sum of the two digits is 6, the number is

A number when divided by divisor leaves a remainder of 24. When twice the original number is divided by the same divisor, the remainder is 11. What is the value of the divisor?

What is the average of 0.36, 4.6, 0.64, and 2.4? 

On dividing a number by 5, we get 3 as remainder. What will the remainder when the square of this number is divided by 5?

The number of multiples of 4 between 10 and 250 is: