Step-by-step explanation:
1.the total probability=100%.
probability of getting a cold is 35%.
let the probability of not getting a cold=x
35+x=100
x=100-35
x=65%
2.sample space=(1,1),(1,2),(1,3),(1,4),(1,5),(1,6),(2,2),(2,3),(2,4),(2,5),(2,6),(3,3),(3,4),(3,5),(3,6),(4,4),(4,5),(4,6),(5,5),(5,6),(6,6)
the numbers that give a total of 3 or 5=
2+1=3,1+4=5,2+3=5
probability=numbers that give a total of 3 or 5/sample space
probability=3/21
probability=1/9
