Which of the following has most number of divisors ?

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1)

Which of the following has most number of divisors ?

2)

252 can be expressed as a product of primes as ;

3)

The H.C.F. of 204, 1190 and 1445 is :

4)

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 :

5)

Four different electronic devices make a beep after every 30 minutes, 1 hour, 1.5 hour

and 1 hour 45 minutes respectively. All the devices beeped together at 12 noon. They will again beep together at :

6)

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 :

7)

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 :

8)

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

9)

The least number of five digits which is exactly divisible by 12, 15 and 18, is :

10)

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

11)

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 ?

12)

Three numbers which are co-prime to each other are such that the product of the first two is 551 and that of the last two a 1073. The sum of the three numbers is :

13)

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

14)

H.C.F. of 4 x 27 x 3125, 8 x y x 25 x 7 & 16 x 81 x 5 x 11 x 49 is :

15)

Find the least number which when divided by 16, 18; 20 and 25 leaves 4 as remainder in each case, but when divided by 7 leaves no remainder.

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