Complete the series by filling in the blank in the correct manner. 15, 45, 70, 90, 105, ?
115
115 is correct.
Find the differences between consecutive terms: \(45 - 15 = 30\), \(70 - 45 = 25\), \(90 - 70 = 20\), \(105 - 90 = 15\).
The differences 30, 25, 20, 15 fall by 5 each time, so the next difference is \(15 - 5 = 10\).
Next term = \(105 + 10 = 115\).
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Important Questions from Number Series
What will come in place of question mark (?) in the following number series?
2, 5, 11, 23, 44, 77, ?
What will come in place of question mark (?) in the following number series?
31, 32, 36, ?, 61, 86
What will come in the place of question mark (?) in the following number series?
3, 6, 18, ?, 630, 6930
What should come in place of the question mark ‘?’ in the following number series?
60, 40, 50, ?, 180, 460
A series is given with one term wrong. Select that wrong term from the given alternatives.
J12, M24, P48, S96, U192
