Question 15
The value of $249^{2} - 248^{2}$ is

A) $1^{2}$
B) $477$
C) $487$
D) $497$

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Solution

The answer is D.
$249^{2} - 248^{2} = (249 + 248) (249 - 248)$ [ using identity, $a^{2} - b^{2} = (a - b) (a + b)$ ]
$497 \times 1 = 497$

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Similar questions

The value of 249² – 248² is
(a) 1
(b) 477
(c) 487
(d) 497

249^{2} - 248^{2}

1^{2}

477

487

497

The value of $(249)^{2} - (248)^{2}$ is
(a) $1^{2}$ (b) $477$ (c) $487$ (d) $497$

249^{2} - 248^{2}

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