1.

What will be the sign of the product of the following (i) 24 times of negative integer? (ii) 35 times of negative integer?

Answer»

(- 1) × (- 1) = + 1 

(- 1) × (- 1) × (- 1) = – 1

 (- 1) × (- 1) × (- 1) × (- 1) = + 1 

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

If negative integer multiplied even number of times, the product is positive integer. If negative integer multiplied odd number of times, the product is negative integer. 

(i) (-a) × (-a) × ………….. 24 times 

= + a (Positive integer) 

(ii) (-a) × (-a) × ……………. 35 times 

= – a (Negative integer)



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