HCF and LCM Tes...

A B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 126 seconds, B in 154 seconds and c in 99 seconds, all starting at the same point. After what time will they again at the starting point?

LCM of 5, 12 and 24 is:

The H.C.F. and the L.C.M. of two numbers are 80 and 320 respectively. If one of the numbers is 640, find the other one.

The LCM of 154 and 98 is

H.C.F of (200, 300) is:    

In a morning walk, three persons step off together. Their steps measure 160 cm, 170 cm, and 180 cm respectively. What is the minimum distance each should walk so that all can cover the same distance in complete steps?

HCF and LCM of two numbers is 25 and 30 respectively. One of the numbers is 50, find the other number.

The product of two numbers is 16,400 and their H.C.F. is 25. Find their L.C.M. 

Find the least number which when divided by 8, 14, 16 and 20 leaves a remainder 3 in each case.

What is the L.C.M of 11 and 7?

In a morning walk, three persons step off together from the same spot. Their steps measure 72cm, 64 cm and 80 cm respectively. What is the minimum distance each should cover so that all can cover the distance in complete steps?

Determine the greatest 4-digit number exactly divisible by 12, 15 and 21.

HCF of two numbers is 6 and product of two numbers is 4182. Find the LCM of two numbers.

The product of two numbers is 336 and their L.C.M. is 56. Find their H.C.F.

In a school, there are two Sections A and B of class X. There are 48 students in Section A and 60 students in Section B. Determine the least number of books required for the library of the school so that the books can be distributed equally among all students of each Section. (2017 OD)

If P_n means prime factors of n, find P₅₀.

Find the smallest 4 digit number which is divisible by 8, 12 and 14.

The length, breadth and height of a cardboard box are 55 cm, 65 cm and 75 cm respectively. Find the longest tape which can measure the three dimensions of the room exactly.

Two Petrol tankers contain 750 litres and 900 litres of petrol respectively. Find the maximum capacity of a container which can contain  the maximum amount of petrol to fill both the tankers.

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?