JEE Main 7 Jan 2020 Shift 2 Solved Paper

Section: Mathematics

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Question : 63 of 75

Marks: +1, -0

The coefficient of x7 in the expression (1+x)10+x(1+x)2 +x2(1+x)8+...+x10 is :

[7 Jan 2020 Shift 2]

120
330
210
420

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