George rolled a number cube 20 times. His results are shown in the table below.

Answer:
a) 7/20
b) 13/20
Step-by-step explanation:
3+4=7
3+4+1+4+3+5=20
He has a probabability of rolling a one or two so he has a 7/20 chance
For B, it is everything else but 1 and 2 so do 20-7=13