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Find the WRONG number in the series: 3, 7, 16, 34, 74, 153

Competition practiceNumber Series

A7
B16
C34
D74

Step-by-Step Solution

Pattern:

\times 2 + 1, \times 2 + 2, \times 2 + 3, \times 2 + 4, \times 2 + 5.16 \times 2 + 3 = 35

, so the 4th term should be 35, not 34 (then

35 \times 2 + 4 = 74, 74 \times 2 + 5 = 153

hold).

Answer: C) 34

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