Question

There are 4 keys on a keychain. One of the keys starts a car. If a key is randomly chosen, what is the probability that it starts the car

A)15% B)25% C)20% D)5%

Answer 1

B because 4 keys 100÷4 is 25 and that's 1 key starts a car

Answer 2

Answer: B)25%

Explanation:

Given : Total number of keys in a key chain = 4 (Total outcomes)

The number of right key to start the car = 1 (Favorable outcome)

Now, If a key is randomly chosen, then the probability that it starts the car is given by :-

`\frac{\text{Favorable outcomes}}{\text{Total outcomes}}\\\\=(1)/(4)=0.25`

In percent,
`0.25*100=25\%`

Hence, the required probability = 25%.