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MathsMediumMCQ2013 ยท 09 Apr Online

Q66.The ratio of the coefficient of x15 to the term independent of x in the expansion of (x2 + x ) is: (1) 7 : 16 (2) 7 : 64 (3) 1 : 4 (4) 1 : 32

What This Question Tests

This question tests the ability to find the general term in a binomial expansion and then determine specific terms (coefficient of x^15 and the term independent of x) by setting the power of x to the required value.

Concepts Tested

Binomial expansionGeneral term of binomial expansionTerm independent of x

Formulas Used

Tr+1 = nCr * (first term)^(n-r) * (second term)^r

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