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No worries. ccassel please check the question once before posting. that really saves you from a lot of trouble. this is a function question hence there has to be something after m. say m[] or m*=3m. Please check and edit your post.What are they asking for you to solve?
For all positive integers m, m=3m when m is odd and m=1/2m when m is even. which of the following is equivalent to 9 x 6?
answer is 27
[M] = 3M when M is odd:For all positive integers, [M]=3m when m is odd, [M]=1/2m when m is even. Which of the following is equivalent to [9]*[6]?
a) [81]
b) [54]
c) [37]
d) [27]
e) [18]
yep.GMATGuruNY wrote:Below is the full question, which is from GMATPrep. If you don't want to be exposed to the question, read no further.
[M] = 3M when M is odd:For all positive integers, [M]=3m when m is odd, [M]=1/2m when m is even. Which of the following is equivalent to [9]*[6]?
a) [81]
b) [54]
c) [37]
d) [27]
e) [18]
Thus, [9] = 3*9 = 27.
[M] is 1/2M when M is even:
Thus, [6] = 1/2*6 = 3.
Thus, [9] * [6] = 27*3 = 81.
Answer choice D:
Since [M] = 3M when M is odd, [27] = 3*27 = 81.
The correct answer is D.
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