Same chapter3 marksDifficulty: Medium
Find the coefficient of x5 in the expansion of (2 + x)8.
Binomial Theorem
4 marksDifficulty: Hard
Find the term independent of x in the expansion of (x + 1/x)10.
Original Khojo Papers practice question — not from a past board paper.
Answer
252
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The general term is 10Cr x10 − r x−r = 10Cr x10 − 2r. This is independent of x when r = 5, giving 10C5 = 252.
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