Quick Facts for GRE 2010

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### LCD - lowest common denominator

Cross out any prime factor in the second denominator that already appears in the first denominator. then multiply the rest.

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### Median

the middle value in a set containing odd numbers; a set with even numbers it is the average of the two middle terms.

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### Fractions or decimals less than 1 raised to a power

will result in a number smaller than the original number

### Flickr Creative Commons Images

Some images used in this set are licensed under the Creative Commons through Flickr.com. Click to see the original works with their full license.