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A series is given with one term missing. Select the correct alternative from the given ones that will complete the series. 5, 13, 25 , 41, ?
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A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
5, 13, 25 , 41, ?
1). 51
2). 72
3). 81
4). 61
1 answers
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Here, pattern follow is,
nth term = square of n + square of (n + 1)
1st term = 12 + (1 + 1)2 = 5;
2nd term = 22 + (2 + 1)2 = 13;
3rd term = 32 + (3 + 1)2 = 25;
4th term = 42 + (4 +1)2 = 39;
5th term = 52 + (5 + 1)2 = 61
Hence, 61 is the correct answer.Other Questions
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