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Find the missing term in the series 1, 9, 25, 49, ?, 121

Asked on by | Votes 0 | Views: 112 | Tags: series     | sequence and series     | reasoning     | Add Bounty

Find the missing term in the series

1, 9, 25, 49, ?, 121
1). 64
2). 81
3). 91
4). 100


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1 answers

3 vote
Answered by on | Votes 3 |

The given series is squares of consecutive odd numbers 1, 3, 5, 7, 9, 11.

12 = 1;

32 = 9;

52 = 25;

72 = 49;

92 = 81;

112 = 121

Hence, the missing term is 9= 81.

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