If a ★ b means (a x b) - a, find 5 ★ 3.
A15
B12
C10CORRECT
D8
Common EntranceQuantitative ReasoningOperations
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Why the answer is C, and why the others tempt you.
Replace a with 5 and b with 3: (5 x 3) - 5 = 15 - 5 = 10.
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