Aptitude - HCF and LCM

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Question 1

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 ?

Question 2

Find the H.C.F of 148 and 185.

Question 3

Find the L.C.M of 15, 18, 24, 27, 56.

Question 4

The least perfect square number which is exactly divisible by 3, 4, 7, 10 and 12 is:

Question 5

If (x+(1/x)) =4, the value of (x5+(1/x5)) is:

Question 6

Find the reminder when 333666777888999 divided by 3 or 9 or 11 ?

Question 7

The H.C.F of 2 numbers is 4 and L.C.M is 576. If one of the number is 64, find the other number.

Question 8

Find the least number which when divided by 6,7,8,9 and 12 leaves the same remainder 2 in each case.

Question 9

Find the H.C.F of 23,32,4 and 15.

Question 10

The H.C.F of two numbers is 12 and their difference is also 12. Find the two numbers?

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