The HCF of 20, 28 and 48 is:
4
Given:
The numbers are 20, 28 and 48
Calculation:
Factors of 20, 28 and 48
20 = 2 × 2 × 5
28 = 2 × 2 × 7
48 = 2 × 2 × 11
Highest common factors is 2 × 2 = 4
∴ The HCF is 4.
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Important Questions from LCM and HCF
The HCF and LCM of two numbers are 12 and 72, respectively. If the ratio of the two numbers is 2 ∶ 3, then the larger of the two numbers is:
Find the greatest number that will divide 43, 91 and 183 so as to leave the same remainder in each case.
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What is the least number which when divided by 12,20 and 24 leaves in each case a remainder of 8?
Which of the following is a pair of co-primes?
