If (4 \# 2 = 14) and (2 \# 3 = 6), what can replace (a \# b) ?

GMAT Quantitative Reasoning Practice Test 1

Question : 42 of 100

Marks: +1, -0

(4 \# 2

= 14

)

and

(2 \# 3

= 6), what can replace

(a \# b)

Solution:

Plug in the answers.
A.

(4 \# 2)=4 × 2=8

. The answer should be 14 .
B.

(2 \# 3)=(2+3)^3=15

. The answer should be 6 .
C.

(2 \# 3)= (2^2-3) =1

. The answer should be 6 .
D.

(4 \# 2)= (4^2-2) =14

. This is the right answer; check

(2 \# 3)

also.

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