1.
Which of the following numbers are perfect squares?
A
16
B
20
C
49
D
50
View Answer
Correct Answers: A, C — 16; 49
Explanation:
16 = 4² and 49 = 7² are perfect squares. 20 and 50 are not.
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2 practice sets · Page 1 of 1
Which of the following numbers are perfect squares?
16
20
49
50
Correct Answers: A, C — 16; 49
Explanation:
16 = 4² and 49 = 7² are perfect squares. 20 and 50 are not.
What is the LCM of 12 and 18?
36
6
72
24
Correct Answer: A — 36
Explanation:
Prime factors: 12 = 2² × 3, 18 = 2 × 3². LCM = 2² × 3² = 36.