In the following question, select the missing number from the given series. 5,…
2024
In the following question, select the missing number from the given series.
5, 9, 26, ?, 514, 3083
- A.
105
- B.
103
- C.
98
- D.
95
Attempted by 1 students.
Show answer & explanation
Correct answer: B
Concept: Each term of the series is generated from the term before it by multiplying by a successively increasing integer (2, 3, 4, 5, 6, ...) and then subtracting 1 from the product.
Application:
5 × 2 − 1 = 9
9 × 3 − 1 = 26
26 × 4 − 1 = 103
103 × 5 − 1 = 514
514 × 6 − 1 = 3083
Cross-check: Substituting the derived value back into the next step (103 × 5 − 1 = 514) reproduces the given fifth term exactly, confirming the multiplier-and-subtract-1 rule holds across the whole series.
Result: The missing number is 103.