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by pnvpratik » Fri Mar 12, 2010 10:52 pm
Q18:
What is the value of the integer k?
(1) k + 3 > 0
(2) k^4 <= 0

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient


Am i correct in saying that since 4th power will always be positive the only no tht fits is 0 and hence the
answer is B ?
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by rockeyb » Fri Mar 12, 2010 11:14 pm
Lets rephrase the question .

K is an integer what is the value of k ?

1. Rephrase :
k > -3

Could be any int greater than -3 not sufficient .

2. Rephrase :

even power of k is less than equal to 0 .

Now if k is - ve an even power of k will be + ve and if k is + ve even power will be + ve as well .

So k must be 0 in order for statement 2 to be true .

Hence B.
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by Phirozz » Fri Mar 12, 2010 11:25 pm
pnvpratik wrote:Q18:
What is the value of the integer k?
(1) k + 3 > 0
(2) k^4 <= 0

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient


Am i correct in saying that since 4th power will always be positive the only no tht fits is 0 and hence the
answer is B ?
Yes u r rite, it can be answered from B alone.
Please do post DS question in DS thread
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