What is the remainder after dividing the number 37^{1000} by 9?

  1. A. 1
  2. B. 3
  3. C. 7
  4. D. 9

Correct Answer: A. 1

Explanation

Since 37 \equiv 1 \pmod 9, applying the exponent gives 37^{1000} \equiv 1^{1000} \equiv 1 \pmod 9. The remainder is 1.

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