2. Polynomials
easy

$249^{2}-248^{2}$ का मान है

A

$1^{2}$

B

$477$

C

$487$

D

$497$

Solution

$(249)^{2}-(248)^{2}=(249+248)(249-248)$

$=(497)(1)=497$

Hence, $(d)$ is the correct answer.

Standard 9
Mathematics

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