Answer:
90 numbers
Step-by-step explanation:
Total choices(don’t care about anything)
6*6*6= 216 numbers
Half of these numbers are odd because the odd numbers are just 1,3,5
6*6*3=108
the three is there because there is 3 odd digits
we can subtract this from 216 along with the numbers that have a repeated 6
Repeating 6’s
case 1: 66_
66 and any other number
remember: we have 6 choices for the last number
number of choices= 1*1*6=6 (the 1’s are there because 6 is the only digit that can come there).
case 2: 6_6
just like last time we have 1*6*1 choices=6
cool?
case 3: _66
again, we have 6*1*1=6 choices
So, we have 18 numbers where 6 repeats itself
Plan: total numbers minus the odd numbers and 6 repeats
216-108-18=90
answer 90 numbers
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