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Whole Numbers

Mark the corr...

Question

Mark the correct alternatives in each of the following:

(−1) × (−1) × (−1) × (−1) × ... 500 times =

(a) −1 (b) 1 (c) 500 (d) −500

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Solution

The number of integers in the given product is even.

∴ (−1) × (−1) × (−1) × (−1) × ... 500 times

= 1 × 1 × 1 × 1 × ... 500 times

= 1

Hence, the correct answer is option (b).

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