Same chapter3 marksDifficulty: Medium
Insert two geometric means between 4 and 108.
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2 marksDifficulty: Easy
Find the sum of the first 15 terms of the arithmetic progression 2, 5, 8, ...
Original Khojo Papers practice question — not from a past board paper.
Answer
345
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
With a = 2 and d = 3, S15 = 15/2 × [4 + 14 × 3] = 15/2 × 46 = 345.
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