Binomial Theorem Part 3
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Question : 4 of 45
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The sum of all possible values of n ∈ N , so that the coefficients of x , x 2 and x 3 in the expansion of ( 1 + x 2 ) 2 ( 1 + x ) n , are in arithmetic progression is :
[23 Jan 2026 Shift 1]
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