Home › IBPS RRB › Quantitative Aptitude › Number Series › Find the missing term: 8, 9, 15, 32, ?, 250.5
Find the missing term: 8, 9, 15, 32, ?, 250.5
A62.5
B47.5
C82.5
D64.5
Answer & Solution
Correct answer: C. 82.5
1. The pattern is ×1+1, ×1.5+1.5, ×2+2, ×2.5+2.5, …
2. 8×1+1 = 9; 9×1.5+1.5 = 15; 15×2+2 = 32.
3. Next: 32 × 2.5 + 2.5 = **82.5** (and 82.5 × 3 + 3 = 250.5 confirms it).
_Source: IBPS RRB Officer Scale I Prelims PYQ (Examrace), Q.71_
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