207 × 193 = ?
(a) 39851
(b) 39951
(c) 39961
(d) 38951

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Solution

(b) 39951

$207 \times 193 = (200 + 7) (200 - 7) = {(200)}^{2} - {(7)}^{2} = 40000 - 49 = 39951$

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Similar questions

$(207 \times 193)$ = ?
(a) 39851 (b) 39951 (c) 39961 (d) 38951

What is $20^{3}$ - $19^{3}$ ?

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