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Random Double Matrix Question #3
May 16, 2011: International Double Matrix month is half over.
Have you become an expert
at solving Double Matrix questions yet?
What’s a Double Matrix question?
For those who missed the first article in this...
More

1
Random Double Matrix Question #3
May 16, 2011: International Double Matrix month is half over.
Have you become an expert
at solving Double Matrix questions yet?
What’s a Double Matrix question?
For those who missed the first article in this series, a Double Matrix question (also known as
an Overlapping Sets question) is one that 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 super difficult question:
In a group of 1000 people, each person is either left-handed or right-handed but
not both.
80% of the females are left-handed, and 84% of the right-handed
people are male.
How many people are right-handed?
1) There are 600 males in the group
2)
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