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1a. Exponent Rules
Fundamentals:
Common Exponents
These exponents commonly appear on the GRE and should be memorized to save time.
| Squares |
Cubes |
Higher Powers |
Other Powers |
| 22 = 4 |
23 = 8 |
20 = 1 |
34 = 81 |
| 32 = 9 |
33 = 27 |
21 = 2 |
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| 42 = 16 |
43 = 64 |
22 = 4 |
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| 52 = 25 |
53 = 125 |
23 = 8 |
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| 62 = 36 |
63 = 216 |
24 = 16 |
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| 72 = 49 |
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25 = 32 |
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| 82= 64 |
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26 = 64 |
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| 92 = 81 |
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27 = 128 |
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| 102 = 100 |
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28 = 256 |
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| 112 = 121 |
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29 = 512 |
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| 122 = 144 |
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210 = 1024 |
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| 132 = 169 |
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| 142 = 196 |
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| 152 = 225 |
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Part of the benefit here is that you can go beyond the chart.
If 210 = 1024, then 2-10 = 1/1024 or 212 = 1024 × 4
The 16 Must Know Exponent Rules
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