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Question
We have three numbers 2, 4, 7. The LCM of these three numbers is 28.
We have three numbers 2, 4, 7. The LCM of these three numbers is 28.
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Solution
The correct option is A 28
For finding the LCM, we can use the following procedure:
Arrange the given numbers in a row in any order. Divide by a number which divides exactly at least two of the given numbers and carry forward the numbers which are not divisible. Repeat the above process till no two of the numbers are divisible by the same number except 1. The product of the divisors and the undivided numbers is the required L.C.M. of the given numbers.
The LCM will be the product of 2 × 2 × 7 = 28
For finding the LCM, we can use the following procedure:
Arrange the given numbers in a row in any order. Divide by a number which divides exactly at least two of the given numbers and carry forward the numbers which are not divisible. Repeat the above process till no two of the numbers are divisible by the same number except 1. The product of the divisors and the undivided numbers is the required L.C.M. of the given numbers.
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