Multiply 9 by itself three times (9 x 9 x 9) to find out. That's what the third power means. For the fourth power, you'd multiply again.
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3 to the 9th power is 3 is multiply by itself nine times i.e. 39 = 3x3x3x3x3x3x3x3x3 =19683
93 (9 to the third power or nine cubed) is equivalent to 729.
Nine to the first power is 9.
nine to the sixth power is 531441.
Nine to the second power is just nine times nine. Any number with a power is just a number that can multiply itself. 2 9 =9*9=81