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13 Dec 2015, 04:45
Kudos
Bookmarks
D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
79% (01:03) correct
21%
(01:04)
wrong
based on 324
sessions
History
Date
Time
Result
Not Attempted Yet
If q and r are both odd numbers, which of the following must also be odd?
A. q – r
B. (q + r)^2
C. q(q + r)
D. (qr)^2
E. q/r
A. q – r
B. (q + r)^2
C. q(q + r)
D. (qr)^2
E. q/r
13 Dec 2015, 13:11
Kudos
Bookmarks
only D should give the result ,
as
(odd*odd)^2
will also be odd
as
(odd*odd)^2
will also be odd
15 Dec 2015, 17:28
Kudos
Bookmarks
Hi All,
This question can be solved by TESTing VALUES.
We're told that q and r are both ODD numbers. We're asked which of the following must also be odd.
IF...
q = 1
r = 3
Answer A) q – r = 1-3 = -2 NOT odd
Answer B) (q + r)^2 = (1+3)^2 = 16 NOT odd
Answer C) q(q + r) = (1)(4) = 4 NOT odd
Answer D) (qr)^2 = (3)^2 = 9 This IS ODD
Answer E) q/r = 1/3 NOT odd
Final Answer:
GMAT assassins aren't born, they're made,
Rich
This question can be solved by TESTing VALUES.
We're told that q and r are both ODD numbers. We're asked which of the following must also be odd.
IF...
q = 1
r = 3
Answer A) q – r = 1-3 = -2 NOT odd
Answer B) (q + r)^2 = (1+3)^2 = 16 NOT odd
Answer C) q(q + r) = (1)(4) = 4 NOT odd
Answer D) (qr)^2 = (3)^2 = 9 This IS ODD
Answer E) q/r = 1/3 NOT odd
Final Answer:
GMAT assassins aren't born, they're made,
Rich
