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  1. If   a +
    1
    = 1 and b +
    1
    = 1 then c +
    1
    is equal to :
    bca
    1. 1
    2. 0
    3. –1
    4. 2
Correct Option: A

a +
1
= 1
b

⇒  a = 1 –
1
=
b − 1
bb

∴ 
1
=
b
ab − 1

Again, b +
1
= 1
c

⇒ 
1
= 1 – b
c

⇒  c =
1
1 – b

∴  c +
1
=
1
+
b
a1 – bb − 1

=
1
b
=
1 – b
= 1
1 – b1 – b1 – b



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