# Best LCM and HCF Questions For DRDO MTS| SSC CGL, CHSL Exam

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## How do you calculate HCF and LCM?

The highest common factor is found by multiplying all the factors which appear in both lists: So the HCF of 60 and 72 is 2 × 2 × 3 which is 12. The lowest common variety is found by multiplying all the factors which appear in either list: So the LCM of 60 and 72 is 2 × 2 × 2 × 3 × 3 × 5 which is 360.

## Lowest Common Multiple (LCM)

The least common multiple, or LCM, is another number that is valuable in tackling numerous math issues. How about we find the LCM of 30 and 45. One approach to find the least common multiple of two numbers is to initially list the prime factors of each number.

30 = 2 × 3 × 5

45 = 3 × 3 × 5

At that point increase each factor the best number of times it occurs in either number. In the event that a similar factor occurs more than once in the two numbers, you duplicate the factor the best number of times it occurs.

2: one event

3: two events

5: one event

2 × 3 × 3 × 5 = 90 <—LCM

After you’ve determined a least common multiple, consistently check to be certain your answer can be isolated equitably by the two numbers.

### Highest Common Factor(HCF)

Highest Common Factor(HCF) of at least two numbers is the best number which divides every one of them exactly.

Most prominent Common Measure(GCM) and Greatest Common Divisor(GCD) are different terms used to allude HCF.

Model : HCF of 60 and 75 = 15 since 15 is the highest number which divides both 60 and 75 exactly.

We can discover HCF utilizing prime factorization method or by partitioning the numbers or division method.

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