JEE Main 2020 (Online) 7th January Morning Slot | Binomial Theorem Question 154 | Mathematics

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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Questions Asked from Binomial Theorem (Numerical)

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