1.

Encircle the odd one of the following(a) (–1) × (–1) (b) (–1) × (–1) × (–1)(c) (–1) × (–1) × (–1) × (–1) (d) (–1) × (–1) × (–1) × (–1) × (–1) × (–1)

Answer»

(b) (–1) × (–1) × (–1)

Since,

(–1) × (–1) = 1

(–1) × (–1) × (–1) × (–1) = 1

(–1) × (–1) × (–1) × (–1) × (–1) × (–1) = 1

But, (–1) × (–1) × (–1) = -1



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