Question 1102738
It is 9C5(1/7)^5(6/7)^4, the 9C5 being the number of ways 5 people out of 9 can answer.
126*(1/7)^5(6/7)^4
126*1296/7^9=126*1296/40353607=0.0040. ANSWER
The expected value is 9/7, so it is very unlikely.