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Question
विस्तार सूत्र की सहायता से मान ज्ञात करो।
502 × 498
Sum
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Solution
यह ज्ञात है कि, (a + b) (a − b) = a2 − b2.
502 × 498
= (500 + 2) × (500 − 2)
= (500)2 − (2)2
= 250000 − 4
= 2,49,996
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