Question

sat数学！~

Lauren mixes and matches all of her jeans ,shirts ,and vests to make different outfits ,If she can make a total of 24 different outfits ,each consisting of one pair of jeans ,one shirt ,and one vest ,which of the following could not be the number of shirts that Lauren has?
A 2. B 3. C 4. D 5. E 6.
我忘说了。。为啥选D？

Answer 1

假设jeans: x ; shirts : y ; vests : z
x*y*z=24
看得出来，如果y=5的话，x*5*z是永远不可能等于24的，因此选择D

Answer 2

The answer is D.