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What is a Perfect square? also write some important properties of square numbers.

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The square of a natural number is called a perfect square

Following are some important properties of square numbers:-

(i) A square number is never negative. 

(ii) A square number never ends in 2, 3, 7 or 8. 

(iii) The number of zeros at the end of a perfect square is always even. 

(iv) The square of an even number is even. 

(v) The square of an odd number is odd. 

(vi) For any natural number n. n2 = Sum of first n odd natural numbers.

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