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By Just Examining the Unit Digit, Can You Tell Which of the Following Cannot Be Whole Square? 1024 - Mathematics

By just examining the unit digit, can you tell which of the following cannot be whole square? 

1024 

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Solution

If the units digit of a number is 2, 3, 7 or 8, the number cannot be a whole square.

1024 has 4 as the units digit, so it is possibly a perfect square.

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APPEARS IN

RD Sharma Class 8 Maths
Chapter 3 Squares and Square Roots
Exercise 3.2 | Q 12.3 | Page 20
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