Question
397 x 1397 = ?
397 x 1397 = ?
Answer A.
A.1397 x 1397
= (1397)^2
= (1400 - 3)^2
= (1400)^2 + (3)^2 - (2 x 1400 x 3)
= 1960000 + 9 - 8400
= 1960009 - 8400
= 1951609.
So the correct answer is option A.
A.1397 x 1397
= (1397)^2
= (1400 - 3)^2
= (1400)^2 + (3)^2 - (2 x 1400 x 3)
= 1960000 + 9 - 8400
= 1960009 - 8400
= 1951609.
इसलिए सही उत्तर विकल्प A है।
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