252 can be expressed as a product of primes as :

Online practise test contains 15 random questions. Read the questions carefully and check the relevant options. After submitting, your test will be processed and results will be displayed.

1)

252 can be expressed as a product of primes as :

2)

The H.C.F. and L.C.M of two numbers are 11 and 385 respectively. If one number lies between 75 and 125, then that number is :

3)

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 ?

4)

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

5)

The L.C.M. of two numbers is 45 times their H C.K. If one of the numbers is 125 and the sum of H.C.F. and L.C.M. is 1150, the other number is :

6)

7)

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 :

8)

252 can be expressed as a product of primes as ;

9)

Which of the following has most number of divisors ?

10)

The maximum number of students among them 1001 pens and 910 pencils can be distributed in such a way that each student gets the same number of pens and same number of pencils is :

11)

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

12)

A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 2.ri2 seconds, B in 308 seconds and C in 198 seconds, all starting at the same point. After what time will they meet again at the starting noint ?

13)

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 :

14)

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 :

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.

2015 by Examfriend.in. All Rights Reserved.