Point out the correct answer for the LCM of these numbers 12, 15, 20, 27.

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540

160

740

5400

answer is A.

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Detailed Solution

The given data is the numbers 12, 15, 20, and 27.
We shall find the LCM of these numbers; by dividing these numbers by least common multiples until no further division is possible and then multiplying all the divisors which are prime numbers.

2 12, 15, 20, 27 2 6, 15, 1 0,27 3 3, 15, 5,27 5 1, 5, 5,9 1, 1, 1, 9 ⇒ L C M = 22 × 3 × 5 × 9 = 540

Hence, the required LCM is 540.
Hence the correct answer is option (1).

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