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Find the missing term in the series. 72, 85, 105, ?, 162, 197

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Find the missing term in the series.

72, 85, 105, ?, 162, 197
1). 118
2). 121
3). 131
4). 141


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1 answers

1 vote
Answered by on | Votes 1 |

The series follows the following pattern:

⇒ 72 + 13 = 85

⇒ 85 + 20 = 105 (13 + 7 = 20)

105 + 26 = 131 (20 + 6 = 26) = ?

⇒ 131 + 31 = 162 (26 + 5 = 31)

⇒ 162 + 35 = 197 (31 + 4 = 35)

 ∴ ? = 131

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