Civil Services Examination · Question 29
Three variables x, y and z take values 2, 3, 4 or 5 such that their values are always distinct. If M and N denote the largest possible value and the smallest possible value, respectively, of the expression {(x × y) + z}, then M - N is
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Answer: (C) 13
Explanation
Maximum = 5×4 + 3 = 23; minimum = 2×3 + 4 = 10. M - N = 13.