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How to swap two variables, without using third variable ?

Answer Posted / ruchi

let the two numbers are a & b

a=a+b
b=a-b
a=a-b

let a=5 & b=10
a=a+b=15
b=a-b=15-10=5
b=5

a=a-b=15-5=10
hence a & b become 10 & 5

Is This Answer Correct ?    0 Yes 3 No



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