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  1. If  
    a
    		 +
    b
    		 +
    c
    		 = 1, then the value of
    1
    		 +
    1
    		 +
    1
    		 is
    1 − a1 − b1 − c1 − a1 − b1 − c
    1. 1
    2. 2
    3. 3
    4. 4
Correct Option: D

Tricky Approach

a
 +
b
 +
c
 = 1
1 − a1 − b1 − c

⇒ 
a
 + 1 +
b
 + 1 +
c
 + 1 = 3 + 1 = 4
1 − a1 − b1 − c

⇒ 
a + 1 − a
 +
b + 1 − b
 +
c + 1 − c
 = 4
1 − a1 − b1 − c

⇒ 
1
 +
1
 +
1
 = 4
1 − a1 − b1 − c


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