If c and d are two integers and @ is defined in p an q as @ (p, q)=(p+1)(q+2), and @ (c, d) equals the product of 2 and 5, then what should be the value of c+d?

A 11
B 5
C 6

Correct Answer: 5

@ (p, q) = (p + 1) (q + 2) ∴ @(c,d) = (c + 1)(d + 2) ⇒3×5 = (c + 1) (d + 2) এখন, c + 1 = 3 এবং d + 2 = 5 ⇒ c = 3 - 1 এবং d = 5 - 2 ∴ c = 2 এবং d = 3 ∴ c + d = 2 + 3 = 5
Bissoy MCQ
#গণিত #United Commercial Bank Ltd (UCB) #United Commercial Bank Ltd - Probationary Officer - 17.02.2017

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