Math, asked by yashikarao2056, 9 months ago

Find : 1-2+3-4+5-6+………….+17-18+19-20

Answers

Answered by divyanshi78
5

Answer:

first we add the digits with negatige sign

then we get ans-110

then add the digits with +ve sign

we get 100

by solving both we get -10

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