Register
A band leader randomly selects 2 students out of 80 band members. If you and your brother are both band members. What is the probability that you are both selected? A: 1/3160 B: 1/20 C: 1/6320 D: 1/1600
141k views
3 votes
A band leader randomly selects 2 students out of 80 band members. If you and your brother are both band members. What is the probability that you are both selected?

A: 1/3160 B: 1/20 C: 1/6320 D: 1/1600

User MigRome
by
8.1k points

1 Answer

3 votes

The probability of choosing one of us is 2 / 80 .

If that happens, then the probability of choosing
the other one is 1 / 79 .

The probability of both things happening is

(2/80) x (1/79) = 1/3160 = 0.0003165... = 0.032... percent

User Raouaoul
by
7.8k points
← Prev Question Next Question →

Related questions

Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.5m questions

12.2m answers

Other Questions

How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
Write words to match the expression. 24- ( 6+3)
Mr. Jacob is 55 years old and tony is 7 years old. in how many years will mr. Jacobs be 4 times as old as Tony
Link Copied!