Question

what will be the unit digit of square of the number 7643

Answer 1

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● square of the given number 7643 is.....

● $\boxed {58415449}$

● The unit digit of the answer is $\boxed {9}$

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Answer 2

7643×7643= 5,84,91,904
unit digit of square of the number 7643 is 4