Q:
Find the wrong number in the given number series?
10, 21, 54, 109, 189
Answer & Explanation
Answer: A) 189
Explanation: The given number series is 10, 21, 54, 109, 189
The series follows a pattern that
10 + 11 = 21
21 + 33 = 54
54 + 55 = 109
109 + 77 = 186
Hence the wrong number in the given number series is 189.
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