How many three-digit numbers are multiples of neither 5 nor 7?

Step-by-step explanation:

Total 3-digit numbers 100 to 999

3 digit multiples of 5; 100 to 995

3 digit multiples of 7:

Total multiples of either 5 or 7 :

This number includes multiples of both 5 and 7

We need to exclude half of the multiples of 5*7= 35 as they are counted twice:

Half of this is 26/13 = 13

The difference of 900 and 310 is the

hi,

3. 12.15, you are correct.

4.2.01, your first digit is correct,

hope this !