Q. 1 B4.9( 14 Votes )

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Answer :

Given a number 297 and need to find out the unit digit of the square of number.

Now, the square of number, n = n2


Since, we have “7” in the units place in the given number “297” we have to square the number 7


72 = 49 and 9 will be the units’ digit.


Hence, the units digit of the square of 297 is 9.


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