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Question

What is the LCM of first 4 prime numbers?

A
1
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B
210
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C
122
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D
30
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Solution

The correct option is B 210
First four prime numbers are 2, 3, 5 and 7

There can't be any common number that can divide all the numbers completely.
So, the LCM is the product.
LCM = 2 × 3 × 5 × 7
= 210

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