Sunday, March 11, 2007

"ALGEBRA QUESTION OF THE DAY"

If n is an odd integer, which one of the following is an even integer?
(A) n^3
(B) n/4
(C) 2n + 3
(D) n(n + 3)
(E) ROOT n
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5 comments:

Anonymous said...

d

March 12, 2007 at 11:58 PM
Anonymous said...

d

March 13, 2007 at 4:30 AM
Vijji said...

d

March 13, 2007 at 8:41 AM
Admin said...

We are told that n is an odd integer. So choose an odd integer for n, say, 1 and substitute it into each
answer-choice. Now, n3 becomes 13 = 1, which is not an even integer. So eliminate (A). Next,
n/4 = 1/4

is
not an even integer—eliminate (B). Next, 2n + 3 = 2.1+ 3 = 5 is not an even integer—eliminate (C).
Next, n(n + 3) = 1(1 + 3) = 4 is even and hence the answer is possibly (D). Finally, n = 1 , which is
not even—eliminate (E). The answer is (D).

March 14, 2007 at 11:40 AM
Anonymous said...

THE ANSWER IS OBVIOUSLY D.

WE CAN SELECT FROM THE CHOISE AND SUBSTITUTE ANY ODD INTEGER..

THE ONLY CHOISE ILL B LEFT IS D.

March 15, 2007 at 7:08 AM

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