Which of the following is false?

Question

a. A number that is divisible by 3 and 20 is divisible by 60.
b. A number that is divisible by 4 and 15 is divisible by 60.
c. A number that is divisible by 5 and 12 is divisible by 60.
d. A number that is divisible by 6 and 10 is divisible by 60.

Answer 1

letter D is false.
For instance, 90 is divisible by 6 and 10, but not divisible by 60.

Answer 2

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