Question

Assertion : 36000 is not a perfect square

Reason : A square number should end with even number of zeros

The correct answer is : (i) A (ii) B (iii) C (iv) D

Answer 1

Answer:

Complete step-by-step answer:

Squares of all integers are known as perfect squares.A perfect square never ends in 2,3,7 or 8 .This is the first observation you will make to check for perfect square.The given number 222222 ends with 2, so the number is not perfect square.

Thus 222222 is not the complete square because the last digit end with 2..

Option B is the correct answer.

Note-In such a particular question, we should understand the basic concepts about perfect squares. When a polynomial or a whole number is multiplied by itself, then it is a perfect square.

Properties of perfect squares:

(i) Numbers ending in 2, 3, 7 or 8 are never a perfect square but on the other hand, all the numbers ending in 1, 4, 5, 6, 9, 0 are not square numbers.

(ii) A number ending in an odd number of zeros is never a perfect square.

(iii) The square of an even number is always even.

(iv) The square of an odd number is always odd.

Hope it helps you keep smiling :)