Quant Question Of The Day: 69
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
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)
B=1
B
B
B