1.
The LCM of 28, 60, 120 and 135 is:
2.
The HCF of two numbers is 11 and their sum is 132. If both the numbers are greater than 42, then the difference between the two numbers is:
3.
The LCM of 672 and 7056 is _____.
4.
The LCM of 56, 30, 108, and 120 is:
5.
Find the HCF of 153, 117 and 405.
6.
LCM and HCF of two numbers are 66 and 11 respectively. If one of the numbers is 33, then find the other number.
7.
LCM and HCF of two numbers are 168 and 14 respectively. If one of the numbers is 42, then find the other number.
8.
LCM and HCF of two numbers are 168 and 6 respectively. If one of the number is 24, then find the other number.
9.
Three numbers are in the ratio of 6 : 7 : 3 and their LCM is 3654. Their HCF is:
10.
An oil dealer had three types of oil. 403 litres of the first kind, 434 litres of the second kind and 465 litres of the third kind. Find the maximum volume of oil, filled in each barrel, if equal number of barrels are filled.
11.
Three numbers are in the ratio 3 : 4 : 5 and their HCF is 60. The numbers are :
12.
The least number of square tiles required to pave the ceiling of a room 525 centimetre long and 378 centimetre broad is:
13.
Find the HCF of 24, 36 and 60.
Solution
HCF of 24, 36, 60
\(24 = 2 \times 2\times 2 \times 3\)
\(36 = 2 \times 2\times 3 \times 3\)
\(60 = 2 \times 2\times 3 \times 5\)
HCF = \(2\times 2 \times 3 = 12\)
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