1
JEE Main 2020 (Online) 9th January Morning Slot
Numerical
+4
-0
The coefficient of x4 is the expansion of (1 + x + x2)10 is _____.
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2
JEE Main 2020 (Online) 7th January Morning Slot
Numerical
+4
-0
Out of Syllabus
If the sum of the coefficients of all even powers of x in the product
(1 + x + x2 + ....+ x2n)(1 - x + x2 - x3 + ...... + x2n) is 61, then n is equal to _______.
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