Property 1 If the units digit of a number is `2 ,3,7 or 8` then it does not have a square root in N (the set of natural numbers).

If the units digit of a number is 2 then it does not have a square root .Is the given statement true?

Property 5 Negative numbers have no square roots in the system of rational numbers.

Property 2 The number ends in an odd number of zeros then it does not have a square root.If a square number is followed by an even number of zeros it has a square root in which the number of zero in the end is half the number of zero in the number.

Property 6 The units digit of the square of a natural number is the units digit of the square of the digit at units place of the given natural number.

1.The unit digit of a two-digit number is 3 and seven xx the sum of the digits is the number itself.Find the number.

The number of elements of the set {x: X in N,x^(2) = 1} where N is the set of all natural numbers is :

Property 4 If a number has a square root in N then its units digit must be 0145 or 9.

A perfect square number having n digits where n is even will have square root with

Probability of selecting a number whose sum of digits is 7 from the set of two digit natural numbers is.