Find out the wrong number in the following number series.
Q. 24, 47, 78, 117, 164, 220
A. 164
B. 78
C. 220
D. 117
E. 47
Sol:
52 – 1 = 24
72 – 2 = 47
92 – 3 = 78
112 – 4 = 117
132 – 5 = 164
152 – 6 = 219
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32, 52, 92, 172, 332, 650
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