Express each of the following numbers as the sum of two odd primes: 98

Write some examples of composite numbers.

Find the LCM of 22, 54, 108, 135 and 198.

The HCF of three numbers is 23, If they are in the ratio of 1 : 2 : 3, then find the numbers.

In which the following expression, has been done prime factorisation? 54 = 2 x 3 x 9

Find the common factors of 4,8 and 12

Check whether the number 9524624 is divisible by 4 or not.

Express each of the following numbers as the sum of three odd primes 53

The greatest 2-digit prime number is ___________

If the difference between the sum of digits at odd places (from the right) and the sum of digits at even places (from the right) of a number is either 0 or divisible by __________, then the number is divisible by 11.

The common factor of 25 and 30 is ___________

Fill in the given space of prime factorisation of 47957. 7x13x ____x17

1 is neither________ nor__________.

What will be the HCF of 1785, 1995 and 3351?

Using divisibility tests, determine the following number is divisible by 6? 4335

If the number 7254 *98 is divisible by 22, the digit at * is

The number of primes between 16 to 80 and 90 to 100 is

The largest number, which always divides the sum of any pair of consecutive odd numbers is

 The number of distinct prime factors of the largest 4-digit number is 

Using divisibility tests, determine which of the following numbers is divisible by 2?

In a firing range, 4 shooters are firing at their respective targets. The first, second, third and fourth shooter hit three targets once in every 5s, 6s, 7s and 8s, respectively. If all of them hit their target at 9:00 am, when will they hit their target together again?