Question

The sum of a non-zero number and its reciprocal is 2. What is the number?
(a) 1
(b) 2
(c) 0
(d) 4

Answer 1

B.2 is the answer.......

Answer 2

Let the number be x so its reciprocal will be x1

⇒x+ x1=2

⇒x 2 +1=2x⇒x 2 −2x+1=0

⇒(x−1) 2 =0⇒x=1

Hence the required number is 1.