1.

[(– 10) × (+ 9)] + ( – 10) is equal to(a) 100 (b) –100 (c) – 80 (d) 80

Answer»

The correct option is (b) –100.

[(– 10) × (+ 9)] + ( – 10)

= (-10 x 9) - 10

= - 90 - 10

= -100



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