SOLUTION: How many two digit counting numbers are not a multiple of 20! I dont know how to get the answer! show work please!

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Question 1074954: How many two digit counting numbers are not a multiple of 20! I dont know how to get the answer! show work please!
Found 2 solutions by Boreal, MathTherapy:
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
There are 90 two digit counting numbers, beginning with 10 and ending with 99.
The ones that are a multiple of 20 are 20,40,60, and 80
All the rest, 95 of them, are not.
95 numbers.

Answer by MathTherapy(10555) About Me  (Show Source):
You can put this solution on YOUR website!

How many two digit counting numbers are not a multiple of 20! I dont know how to get the answer! show work please!
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