Find the next number: 10, 13, 19, 28, 40, ?
A52
B60
C55CORRECT
D54
Common EntranceQuantitative ReasoningNumber Series
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Why the answer is C, and why the others tempt you.
The differences are 3, 6, 9, 12, so the next difference is 15: 40 + 15 = 55.
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