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Random Double Matrix Question #2
May 9, 2001: It’s International Double Matrix month, and as tradition has it, the 9th
day is
devoted to questions involving students taking or not taking certain subjects.
So, in
celebration, here’s a question...
More

1
Random Double Matrix Question #2
May 9, 2001: It’s International Double Matrix month, and as tradition has it, the 9th
day is
devoted to questions involving students taking or not taking certain subjects.
So, in
celebration, here’s a question along with a video solution.
Don’t forget Double Matrix questions are very popular on the GMAT, so if you want a solid
score, you’ll have to master them.
What’s a Double Matrix question?
For those who missed my last article, a Double Matrix question involves a certain population
where each member of that population has two characteristics associated with it.
Questions
that fall into this category can often be solved using the Double Matrix Method.
For an introductory lesson on the Double Matrix Method, please watch the video at
http://www.
youtube.
com/watch?v=OWD2t5jCCZQ
Afterwards, you can try solving this harder-than-average question:
In a group of 90 students, 36 are taking History, and 32 are taking Statistics.
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