JEE PYQ: Binomial Theorem Question 15
Question 15 - 2021 (25 Feb Shift 2)
If the remainder when $x$ is divided by 4 is 3, then the remainder when $(2020 + x)^{2022}$ is divided by 8 is
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Answer: 1
Solution
$(4k+3)^2 \equiv 1 \pmod{8}$, so $(4k+3)^{2022} \equiv 1 \pmod{8}$.