The square of which of the following numbers would be an odd number?
(i) 731
(ii) 3456
(iii) 5559
(iv) 42008.

To do:

We have to find the square of which the given numbers would be an odd number.

Solution:

We know that,

The square of an odd number is odd and of even number is even.

(i) Here, the unit digit of 731 is 1.

Therefore,

The square of the given number is an odd number.

(ii) Here, the unit digit of 3456 is 6.

Therefore,

The square of the given number is not an odd number.

(iii) Here, the unit digit of 5559 is 9.

Therefore,

The square of the given number is an odd number. 

(iv) Here, the unit digit of 42008 is 8.

Therefore,

The square of the given number is not an odd number. 

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Updated on: 10-Oct-2022

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