Question

51*49=??
In a detailed manner

Answer 1

Answer:

Here We can covert These numbers to simpler form for easy simplification

51 = 50 +1

49 = 50 -1

Therefore we get (50+1)(50-1)

This looks like an identity

$(a + b)(a - b) = {a}^{2} - {b}^{2}$

where a = 50 and b = 1

So we do

${50}^{2} = 2500$

${1}^{2} = 1$

Subtracting it we get 2499

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