Answer :
(i) We know that,
According to the property of squares, the square of an odd number is an odd number
The given number is ending with the digit 4 which is an even number
Thus, this number is not the square of an odd number.
(ii) We know that,
According to the property of squares, the square of an odd number is an odd number
The given number is ending with the digit 1 which is an odd number
Thus, this number is the square of an odd number.
(iii) We know that,
According to the property of squares, the square of an odd number is an odd number
The given number is ending with the digit 6 which is an even number
Thus, this number is not the square of an odd number.
(iv) We know that,
According to the property of squares, the square of an odd number is an odd number
The given number is ending with the digit 9 which is an odd number
Thus, this number is the square of an odd number
(v) We know that,
According to the property of squares, the square of an odd number is an odd number
The given number is ending with the digit 5 which is an odd number
Thus, this number is the square of an odd number
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