A square of a number has its tens digit '7'. What is the units digit of the original number?

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Solution

Square has tens digit '7
So, the square will be 576.
and hence the number is 24.
Unit's Digit = 4.

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A square of a number has its tens digit '7'. What is the units digit of the original number?

Square has tens digit '7So, the square will be 576.and hence the number is 24.Unit's Digit = 4.

Square has tens digit '7
So, the square will be 576.
and hence the number is 24.
Unit's Digit = 4.