Question

If you roll a number cube 12 times, about how many times would you expect NOT to roll a 5 or 6?

Answer 1

so 6 number total
5 and 6 are 2 so
6-2=4
find probaility of NOT roling is disired outcomes/total possible outcomes so

disired=4
total possible=6
4/6=2/3
so 2/3 times out of 12 you would not roll a 5 or 6 so
2/3 times 12=24/3=8

8 is the naswer