Answer: 0.2
Step-by-step explanation:
Number of ways to select r things out of n things =
Then , Total number of ways to select 2 out of 5 chores =
Number of ways to selecting first 2 on list = 2 (either he choose top on the list first then second , or second person first then topper)
Now , the probability he will choose the first 2 on list =
Hence, the probability he will choose the first 2 on list is 0.2.