If the units digit of a perfect square is 4, then the units digit of its square root can be: A. 2 B. 8
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If the units digit of a perfect square is 4, then the units digit of its square root can be: A. 2 B. 8
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Answer:
the unit digit is A
Step-by-step explanation:
2 × 2= 4
Step-by-step explanation:
Unit digit of multiplication of 2 numbers is obtained by taking the last digit of the multiplication of two numbers i.e. the digits in the unit place.
Units digit of 39×39 is obtained by taking the last digit of 9×9=81.
=>Unit digit of square of 39 is 1.
I hope I helped you dear