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Which sequence is built by a recurrence relation rather than a visible pattern?
A5, 25, 125, 625
B1, 1, 2, 3, 5, 8
C2, 4, 6, 8, 10
D1, 3, 5, 7, 9
Answer & Solution
Correct answer: B. 1, 1, 2, 3, 5, 8
1. Each term is the sum of the two before it.
2. No simple formula shows on the surface.
3. That is the Fibonacci sequence.
_Source: NCERT Class 11 Mathematics, Chapter 8, Sequences and Series._
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