Problem Solving (PS) | Re: In a group of 800 people, 1/5 play at least one instrument..

1/5th of the 800 students play at least one instrument = 1/5*800 = 160
96 played two or more.
No of students that played exactly one = 160-96= 64

P(E)= 64/160 = 2/25 (C)

---