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LCM & HCF || 08.06.2021

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Question 1

Find the HCF of 378 and 342.

Question 2

Find the least perfect square number, which when divided by 4, 5 and 6 gives remainder 0 in each case.

Question 3

What will be the ratio of Highest common Factor and Least Common Multiple of two numbers 16 and 20?

Question 4

What is the Highest Common Factor of 42, 168 and 210?

Question 5

On dividing the numbers 7654, 8506 and 9997 by a certain largest number, in each case the remainder is the same. Find the number and the remainder.

Question 6

LCM and HCF of two algebraic expressions are (x3 + 3x2 - 25x - 75) and (x + 3) respectively. One of the algebraic expressions is  (x2 + 8x + 15) find the other:

Question 7

Find the LCM of 132, 176 and 275.

Question 8

In finding the HCF of two numbers by division method, the quotients are 1, 8 and 2 respectively, and the last divisor is 105. What is the sum of the numbers?

Question 9

Find the H.C.F. of  2/3, 7/9, 35/81

Question 10

If the 5-digit number 538xy is divisible
by 3, 7 and 11, then the value of (x2 + y2) is:
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