The H.C.F. of 3666 and 3444 is :

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1)

The H.C.F. of 3666 and 3444 is :

2)

The L.C.M. of 22, 54, 108, 135 and 198 is :

3)

The H.C.F. of 1.75, 5.6 and 7 is :

4)

Six bells commence tolling together and toll at intervals of 2, 4, 6, 8, 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together ?

5)

The least rubber which is a perfect square and is divisible bv each of the numbers Jo, 20 and 24, is :

6)

Let N be the greatest number that will divide 1305, 4665 and 6905, leaving the same remainder in each case Then sum of the digits in N is :

7)

A number a is said to be perfect if the sum of all its divisors (excluding n itself) is equal to n. An example of perfect number is :

8)

The H.C.F. of 2/3. 8/9. 64/81 and 10/27 is :

9)

Which of the following is a pair of co-primes ?

10)

Product, of two co-prime numbers is 117. Their L.C.M. should be :

11)

Let the least number of six digits, which when divided by 4, 6, 10 and 15 leaves in each case the same remainder of 2, be N. The sum of the digits in N is :

12)

252 can be expressed as a product of primes as :

13)

The H.C.F. of two numbers is 23 and the other two factors of their L.C.M. are 13 and 14. The larger of the two numbers is :

14)

Three different containers contain 496 litres, 403 litres and 713 litres of mixtures of milk and water respectively. What biggest measure can measure all the different quantities exactly ?

15)

The H.C.F. of two numbers is 11 and their L.C.M. is 7700. If one or the numbers is 275, then the other is :

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