Which number breaks the sequence? 0, 1, 1, 2, 4, 8, 13
4
The series 0, 1, 1, 2, ... follows the Fibonacci rule: each term is the sum of the two terms before it.
0 + 1 = 1, 1 + 1 = 2, 1 + 2 = 3 - so the fifth term should be 3, not 4.
Continuing correctly: 2 + 3 = 5, 3 + 5 = 8, 5 + 8 = 13, giving 0, 1, 1, 2, 3, 5, 8, 13.
The given series first goes wrong at the term 4 (it should be 3); among the choices, that is the number that breaks the sequence.
Hence, the number that breaks the sequence is 4.
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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
