1.

If ∆ is an operation on integers such that a ∆ b = a − b − 2, for all integers a, b. Then, 7 ∆ (− 4) =(a) 11 (b) − 9 (c) 9 (d) 1

Answer» If ∆ is an operation on integers such that a ∆ b = a − b − 2, for all integers a, b. Then, 7 ∆ (− 4) =



(a) 11 (b) − 9 (c) 9 (d) 1


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