Question

there are five keys to five cars. what is the probability that someone picks up one of the keys and opens one of the cars?

Answer 1

Oh! what I mean is - he goes straight to the correct car.

Answer 2

So the key that you have can open only one of five car, so I believe that probability is 1/5

Answer 3

correct imran - its surprising how many people say 1/25

Answer 4

1/5

Answer 5

1/25, i agree. My test tonite is on the same thing.

Answer 6

you agree with 1/25? that doesn't seem right....the chances that you will pick a key are 1:1...that key will open the car 1:5...the picking of the key doesn't change those odds. 1/5...20%