Answer:
21
Step-by-step explanation:
A prime number has only two factors: 1 and itself.
A composite number has more than two factors. The number 1 is neither prime nor composite.
B. 21
31 is the only number that can be made by multiplying another number other than 1 and itself.
1x21=21
3x7=21
all the other options only have 2 factors
The answer is in the question! If 2km = 2000m then 8km = 8000m
1 3/4 gallons of paint
sorry if wrong
2
