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HCF

Find the LCM ...

Question

Find the LCM of 15 and 20 using ladder method

A

120

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B

30

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C

60

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Solution

The correct option is C 60
Ladder method of 15 and 20:

Prime factorisation of the LCM of 15 and 20 is 2 × 2 × 3 × 5 = 60.

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