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Probability is often seen as the real evil of the GMAT. But the truth is that
by mastering one simple fraction, you can make probability approachable
and even easy.
Let’s say that you have a single six-sided die. If you role it, what is the
probability you would roll a 5?
There are 6 sides to the die, and each one could come up. The 5 side is one
of those sides, right? So there are 6 possible outcomes, and the five is one
of them. Therefore, there is a 1 in 6 probability that the five will come up.
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800Score Technique: The Bottom and the Top
If you want to make probability approachable, just think of it as a fraction to solve Bottom to Top. The bottom number is the total number of possibilities that could happen, and the top number is the number of possible ways to achieve the desired result.
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Or, more simply:
Probability =
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what we want |
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all of what’s possible. |
Apply that to the above example:
Bottom: 6 outcomes are possible
Top: 1 outcome we want
Probability: 1/6
This is a partial free sample of our prep guide. To view the remainder of this page, purchase the 800score.com Prep Course.
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