hemanthp wrote:

If a and b are different positive integers and a + b = a(a + b), then which of the following must be true?

I. a = 1

II. b = 1

III. a < b

A. I only

B. II only

C. III only

D. I and II

E. I and III

a + b = a(a + b)

=> (a+b)(a-1) = 0

=> a=-b , a =1

a and b are both positive. So, a = -b is not possible.

a=1,

Also a and b are both different positive integers. So, b >1.

and hence a<b

So, I & II both are correct.

Answer E
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