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What is 9 to the 4th power?

  1. 6561

  2. 3645

  3. 5499

  4. 1024

The correct answer is: 6561

9 to the 4th power means multiplying 9 four times 9 x 9 x 9 x 9. This results in 6561. Option B and C are incorrect because they are not even numbers and do not result in an integer when multiplied four times. Option D is incorrect because 1024 is the result of 9 to the 3rd power (9 x 9 x 9).