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When 721 + 722 + 723 + 724 is divided by 25 the remainder is:

Correct Answer: 0

Explanation:

Given, 7 21 + 7 22 + 7 23 + 7 24


7 21 (1 + 7 + 49 + 343)
7 21 (400)


Now, 400 is divisible by 25. The remainder will be 0


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