Ex.6.1 Q2 Squares and Square Roots Solutions - NCERT Maths Class 8
The following numbers are obviously not perfect squares. Give reasons.
(iv) \( 222222\)
(v) \( 64000\)
What is known?
Numbers whhich are perfect square
What is unknown?
Why these number are not perfect square
The square of a number has \(0,1,4,5,6\) or \(9\) at its unit’s place are perfect squares.
Also, square of a number can only have even number of zeros at the end.
In the above question unit digit of numbers are \(7, 3, 8, 2, 000, 2, 000, 0\) respectively, so these number are obviously not perfect square.