Which of the following is NOT equal to the square of an integer?

Question

A  \sqrt{1}

B  \frac{4^2}{2^2}

C 81

D 41 - 9

E 36

Ok3r4 · Answer

The correct answer is D.

reasoning: the answer will be a number that does not equal a perfect square.

a. square root of 1 = 1. 1 squared = 1. incorrect. 
b.4 squared / 2 squared = 16/4 = 4 = 2 squared. incorrect. 
c. 81 = 9 squared. incorrect. 
d. 41-9 = 32. 32 is not a perfect square. correct. 
e. 36 = 6 squared. incorrect.

MathRevolution · Answer

41 - 9 = 32 is not a perfect square of an integer.

Answer D

TestPrepUnlimited · Answer

A is 1 squared.

B is  (\frac{4}{2})^2 = 2^2

C is 9 squared and E is 6 squared, only D = 32 which is not a square.

Ans: D

SurajC · Answer

For those confused by the  \sqrt{1}  and perfect squares. Don't overthink like I did - the  \sqrt{1}  = 1 and 1^2 is also 1. That leaves (D) as the only correct choice.

PolarisTestPrep · Answer

Hello!

Let's go through these one by one

A.  \sqrt{1}  = 1

1 =  1^2  so A is out

B.  \frac{4^2}{2^2}  =  \frac{16}{4}  = 4

4 =  2^2 , B is out

C. 81 =  9^2 , out

D. 41 - 9 = 32

\sqrt{32}  is not an integer

\sqrt{25}  = 5
 \sqrt{36}  = 6
 \sqrt{32}  = 5.something

(D) is the answer

E. Just for fun lets do E. Never enough math right?

36 =  6^2  E is out

Which of the following is NOT equal to the square of an integer?

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Which of the following is NOT equal to the square of an integer?

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