Answer:
1/10
Step-by-step explanation:
There are 10 possible ways to choose 2 flavors from 5. Only one of those 10 choices is Guava and Grape. If flavors are chosen at random, the probability that the two specific flavors are displayed is ...
1/10
_____
The number of ways k can be chosen from n is ...
nCk = n!/(k!(n-k)!)
Then 5C2 = 5!/(2!(5-2)!) = 5·4/2 = 10.