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Multiplicative Identity

Mark the corr...

Question

Mark the correct alternative in each of the following:

What is the multiplicative identity element in the set of whole numbers?

(a) 0 (b) 1 (c) −1 (d) None of these

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Solution

We know that if a is a whole number, then a × 1 = a = 1 × a.

Therefore, 1 is the multiplicative identity element for multiplication of whole numbers because it does not change the identity or value of the whole number during the operation of multiplication.

Hence, the correct answer is option (b).

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