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Wednesday, March 14, 2007

"QUESTION ON DEMAND"

Define the symbol * by the following equation:
x* = 1 – x, for all non-negative x. If
((1 − x)*)* =(1 − x)* , then x =
(A) 1/2
(B) 3/4
(C) 1
(D) 2
(E) 3

contributed by SUDHANSHU JAIN

10 comments:

Madhur said...: A; March 14, 2007 at 11:56 AM
Anonymous said...: D i think its 2; March 14, 2007 at 4:32 PM
Anonymous said...: the answer is 1/2; March 15, 2007 at 7:25 AM
Anonymous said...: the ans is C i.e. 1; March 15, 2007 at 11:39 AM
Unknown said...: A; March 15, 2007 at 7:12 PM
Anonymous said...: the anser is C:1
because,
x*= 1-x
so,
((1-x)*)*= (1-x)8
so, ((x*)*)* = (x*)*
so now * has to be 1, than only both the sides would be equal
((1)*)*)* = (1*)*
1 = 1
answer is 1, thts C; March 16, 2007 at 9:17 AM
Madhur said...: the answer is A not C; March 19, 2007 at 12:36 AM
Aditya Shukla said...: C.; March 19, 2007 at 6:45 AM
Unknown said...: A; March 19, 2007 at 12:01 PM
DeeJay said...: Ofcourse, no doubt the answer is :
x=1/2; March 25, 2007 at 1:12 AM

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