Numbers

If a and b are two real numbers which satisfy a + b − ab = 1 and a is not an integer, then b

(a) is never an integer
(b) must be some positive integer
(c) must be some negative integer 
(d) must be equal to 0
(e) may either be an integer or a non-integer

See our previous ‘Questions of the Day’:

Quant Question Of The Day: 68
Quant Question Of The Day: 67

6 comments

  1. Since a is not an integer
    It means a≠0
    a+b-ab=1
    b-ab=1-a
    b(1-a)= (1-a)
    b=1

    Hence option (b)

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