Question

please any one solve this problem without actual multiplication - 501/2 × 491/2
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Answer 1

Answer:

245991 / 2

Step-by-step explanation:

Given,

501/2 x 491/2

i.e (501 x 491)/2

= ((500+1)x(500-9))/2

= (500 x 500 - 9 x 500 + 1 x 500 - 1 x 9)/2

= (250000-4500+500-9)/2

= 245991 / 2