DS number system

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DS number system

by nikhilagrawal » Sat Oct 04, 2008 2:11 pm
What is the value of y?

(1) 3|x2 – 4| = y – 2

(2) |3 – y| = 11

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by sethids » Sat Oct 04, 2008 3:12 pm
Could you please confirm Stmt1 for this question?

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by raju232007 » Sat Oct 04, 2008 11:03 pm
statement 1:

3|x^2-4|=y-2
The modulus of a umber is always greater than 0...so y-2>0
therefore y>2
but we cant determine the value of y from this statement

statement 2:

|3 – y| = 11
The two possible solutions for y are -8 and 14..
Statement 2 is insufficient..

From statement 1 and 2
we know that y>2 and y=14 & y=-8
so we know that y=14

Hence the ans is C

Let me know if you have any doubts..