The GMAT's quantitative section is increasingly emphasizing problem solving skills over calculation abilities, and often does so in the form of "Number Properties" questions. The authors of the exam are also quite adept at recognizing "mathematical psychology", and creating questions that increase an examinee's anxiety by enough to make that process of problem solving a bit more difficult. One of the major themes that arises as a result is the use of exponents, which carry with them a number of properties extremely useful to the writers of the GMAT.

Exponents

• Inspire fear (or at least apprehension) in test takers

• Lead to cumbersome, time-consuming calculations involving large numbers

• Are actually quite pattern-driven, and reward those who seek out those patterns rather than attempt to perform the extensive calculations

How can this help you on the exam?

If you embrace the pattern-driven quality of exponents, you can rest easy on exponent questions...

Categories : Exponents |

To answer questions that involve negative fractions and exponents, you have to know the following rules: |

Categories : ExponentsIf 5^A = B, what is A? |

If n and a are positive integers, what is the units digit of n^(4a+2) – n^(8a)? |