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Find the missing term: 7, 26, 63, 124, 215, ?
A342
B350
C300
D330
Answer & Solution
Correct answer: A. 342
1. Observe pattern: 7 = 2^3 - 1, 26 = 3^3 - 1, 63 = 4^3 - 1.
2. Continue: 124 = 5^3 - 1, 215 = 6^3 - 1.
3. Next term: 7^3 - 1 = 343 - 1 = 342.
4. So the missing term is 342.
_Source: ICAI BoS Foundation Paper 3, Ch 9, p.3 worked examples_
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