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MathsMediumMCQ2014 ยท 19 Apr Online

Q66.The coefficient of x1012 in the expansion of (1 + xn + x253) 10, (where nโ‰ค22 is any positive integer), is (1) 253C4 (2) 10C4 (3) 4n (4) 1

What This Question Tests

This problem requires applying the multinomial theorem to find the coefficient of a specific power of x by finding integer solutions to the power equations.

Concepts Tested

Multinomial theoremCombinations for specific terms

Formulas Used

(x+y+z)^n = โˆ‘ (n! / (r1! r2! r3!)) * x^r1 * y^r2 * z^r3

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