Anaira Mitch wrote:What is the number of three-digit multiples of 5 that are not divisible by 10?
a) 90
b) 100
c) 180
d) 200
e) 1000
Number of options for the hundreds digit = 9. (Any digit 1-9.)
Number of options for the tens digit = 10. (Any digit 0-9.)
Number of options for the units digit = 1. (Must be 5.)
To combine these options, we multiply:
9*10*1 = 90.
The correct answer is
A.
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