Which of the following is a perfect square number?

a)
222222

b)
23453

c)
1681

d)
1057

Correct answer is option 'C'. Can you explain this answer?

Question

Which of the following is a perfect square number?a)222222b)23453c)1681d)1057Correct answer is option 'C'. Can you explain this answer?

Answer

The answer is 1681 because it is the only number which has it's last digit as a number which a perfect square can have . 9×9=81 the last digit is 1.

Answer

409 × 409=1681 c

Answer

1681

Answer

C

Answer

1681

Answer

The perfect square number is 1681.It is one of the square number's property that those number which ends with 2,3,7,8 and odd number of zero is never a perfect square number.

Answer

Guise give me suggestion how we simplify a questions in which find least number from the not perfect square number and multiply this number to get a perfect square without any calculations?

Answer

C

Answer

Yes option c is a perfect square because the last digit is 1  9×9=81 therefore is 9 square last digit is 1

Answer

C

Answer

To determine whether a number is a perfect square, we need to find its square root and check if it is a whole number. If the square root is a whole number, then the number is a perfect square.

Let's analyze the given options:

a) 222222
To find the square root of 222222, we can use a calculator or approximation methods. In this case, the square root is approximately 471.4045208, which is not a whole number. Therefore, 222222 is not a perfect square.

b) 23453
Similarly, finding the square root of 23453 gives us approximately 153.169294, which is not a whole number. Hence, 23453 is not a perfect square.

c) 1681
The square root of 1681 is exactly 41, which is a whole number. Therefore, 1681 is a perfect square.

d) 1057
The square root of 1057 is approximately 32.528309 , which is not a whole number. So, 1057 is not a perfect square.

Hence, the correct answer is option C, 1681.

Answer

C

Answer

Answer is 1681

Answer

Correct option is C as perfect square numbers never ends with 2,3,7 or 8.

Answer

1618

Answer

The answer is 1681 because it is the only number which has it's last digit as a number which a perfect square can have . 9×9=81 the last digit is 1.

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