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1. One term in the number series is wrong. Find out the wrong term.
1, 3, 12, 25, 48
So, 25 is wrong and must be replaced by (62 - 32) i.e. 27.
1, 3, 12, 25, 48
Solution:
The terms of the series are (l2 - 02), (22 - l2), (42 - 22), (62 - 32) and (82 - 42).So, 25 is wrong and must be replaced by (62 - 32) i.e. 27.