Math, asked by anwesha29, 1 year ago

A boy works (x+y) sums of which only y-2z are right. How many are wrong?

Answers

Answered by cosmicwave
4

(x+y) total sums of which only y-2z are right,

ie., x+y = ((y-2z) + wrong answers

wrong = x +y -y +2z

wrong answer are of x+2z

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