Question
1398 x 1398 = ?
1398 x 1398 = ?
Answer: Option D
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Answer : Option D
Explanation :
1398 x 1398
= (1398)2
= (1400 - 2)2
= 14002 - (2 × 1400 × 2) + 22
= 1960000 - 5600 + 4
= 1954404
Note : It will be great if you master speed maths techniques based on Vedic Mathematics,
Trachtenberg System of Mathematics etc so that you can do these calculations even faster
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