- Prime Numbers Factors and Multiples
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- Even and Odd Numbers
- Divisibility Rules for 2, 5, and 10
- Divisibility Rules for 3 and 9
- Factors
- Prime Numbers
- Prime Factorization
- Greatest Common Factor of 2 Numbers
- Greatest Common Factor of 3 Numbers
- Introduction to Distributive Property
- Understanding the Distributive Property
- Introduction to Factoring With Numbers
- Factoring a Sum or Difference of Whole Numbers
- Least Common Multiple of 2 Numbers
- Least Common Multiple of 3 Numbers
- Word Problem Involving the Least Common Multiple of 2 Numbers
Least Common Multiple of 2 Numbers Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to Least Common Multiple of 2 Numbers. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - Find the least common multiple (l. c. m.) of following pair of numbers.
18, 24
Answer : C
Explanation
Step 1:
The multiples of 18 and 24 are as follows
18, 36, 54, 72…
24, 48, 72…
Step 2:
The lcm of 18 and 24 is therefore 72
Q 2 - Find the least common multiple (l. c. m.) of following pair of numbers.
15, 27
Answer : A
Explanation
Step 1:
The multiples of 15 and 27 are as follows
15, 30, 45, 60, 75, 90, 105, 120, 135…
27, 54, 81, 108, 135…
Step 2:
The lcm of 15 and 27 is therefore 135
Q 3 - Find the least common multiple (l. c. m.) of following pair of numbers.
21, 30
Answer : B
Explanation
Step 1:
The multiples of 21 and 30 are as follows
21, 42, 63, 84, 105, 126, 147, 168, 189, 210…
30, 60, 90, 120, 150, 180, 210…
Step 2:
The lcm of 21 and 30 is therefore 210
Q 4 - Find the least common multiple (l. c. m.) of following pair of numbers.
16, 36
Answer : D
Explanation
Step 1:
The multiples of 16 and 36 are as follows
16, 32, 48, 64, 80, 96, 112, 128, 144…
36, 72, 108, 144…
Step 2:
The lcm of 16 and 36 is therefore 144.
Q 5 - Find the least common multiple (l. c. m.) of following pair of numbers.
16, 48
Answer : D
Explanation
Step 1:
The multiples of 16 and 48 are
16, 32, 48…
48, 96...
Step 2:
So the lcm of 16 and 48 is 48 itself.
Q 6 - Find the least common multiple (l. c. m.) of following pair of numbers.
24, 30
Answer : C
Explanation
Step 1:
The multiples of 24 and 30 are
24, 48, 72, 96, 120…
30, 60, 90, 120…
Step 2:
So the lcm of 24 and 30 is therefore 120.
Q 7 - Find the least common multiple (l. c. m.) of following pair of numbers.
15, 25
Answer : B
Explanation
Step 1:
The multiples of 15 and 25 are as follows
15, 30, 45, 60, 75…
25, 50, 75…
Step 2:
The lcm of 15 and 25 is therefore 75.
Q 8 - Find the least common multiple (l. c. m.) of following pair of numbers.
30, 45
Answer : A
Explanation
Step 1:
The multiples of 30 and 45 are as follows
30.60, 90…
45, 90…
Step 2:
So the lcm of 30 and 45 is 90.
Q 9 - Find the least common multiple (l. c. m.) of following pair of numbers.
48, 60
Answer : D
Explanation
Step 1:
The multiples of 48 and 60 are as follows
48, 96, 144, 192, 240…
60, 120, 180, 240…
Step 2:
The lcm of 48 and 60 is therefore 240.
Q 10 - Find the least common multiple (l. c. m.) of following pair of numbers.
20, 26
Answer : C
Explanation
Step 1:
The multiples of 20 and 26 are
20, 40, 60, 80, 100, 120, 140…
28, 56, 84, 112, 140…
Step 2:
The lcm of 20 and 26 is therefore 140.