A perfect square number can never have the digit _____ at the units place

Which of the following numbers is not a perfect square?

Which of the following is the square of an odd number?

Find the least number of four digits which is a perfect square. Also find the square root of the number so obtained.

The difference of two perfect squares is a perfect square.

Find the value of the following, using the diagonal method: $(67{)}^2$

Which of the following numbers is not a perfect square?

Find the value of the following, using the diagonal method: $(137{)}^2$

The square of an even number is

Find the greatest number of five digits which is a perfect square. Also find the square root of the number so obtained.

Identify by mere observation, the numbers that are not perfect squares.

(i) $5184$(ii) $12,321$(iii) $16,928$(iv) $35,623$

The product of two perfect squares is a perfect square.

Find the value of the following, using the diagonal method: $(256{)}^2$

Which of the following numbers is not a perfect square?