Perfect Squares

Question 1

1^2

Answer 1

1

Question 2

2^2

Answer 2

4

Question 3

3^2

Answer 3

9

Question 4

4^2

Answer 4

16

Question 5

5^2

Answer 5

25

Question 6

6^2

Answer 6

36

Question 7

7^2

Answer 7

49

Question 8

8^2

Answer 8

64

Question 9

9^2

Answer 9

81

Question 10

10^2

Answer 10

100

Question 11

11^2

Answer 11

121

Question 12

12^2

Answer 12

144

Question 13

13^2

Answer 13

169

Question 14

14^2

Answer 14

196

Question 15

15^2

Answer 15

225

Question 16

16^2

Answer 16

256

Question 17

17^2

Answer 17

289

Question 18

18^2

Answer 18

324

Question 19

19^2

Answer 19

361

Question 20

20^2

Answer 20

400

Question 21

21^2

Answer 21

441

Question 22

22^2

Answer 22

484

Question 23

23^2

Answer 23

529

Question 24

24^2

Answer 24

576

Question 25

25^2

Answer 25

625

Question 26

26^2

Answer 26

676

Question 27

27^2

Answer 27

729

Question 28

28^2

Answer 28

784

Question 29

29^2

Answer 29

841

Question 30

30^2

Answer 30

900

Question 31

Essential GMAT Quant Skills

Which of the following is not a perfect square?

2,916
4,225
5,778
7,569
9,604

Answer 31

Answer: C

5,778 is not a perfect square

perfect squares always end in 0, 1, 4, 5, 6, or 9.

Perfect Squares NEVER have 2, 3, 7, 8 in the units digit