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Question
The LCM of smallest 2-digit number and smallest composite number is ______.
Options
12
4
20
40
Solution
The LCM of smallest 2-digit number and smallest composite number is 20.
Explanation:
Smallest two-digit number = 10
Smallest composite number = 4
Then 10 = 2 × 5 × 1
4 = 2 × 2 × 1
LCM = 2 × 2 × 5 × 1 = 20
Therefore, the LCM of smallest 2-digit number and smallest composite number is 20.
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