Question

You accidentally dropped a coin from the top of 7 stairs. What is the probability that it will land below the sixth step and heads up?

Answer 1

1/7 * 1/2 = 1/14
1/2 because there is a 50/50% chance its either heads or tails

Answer 2

The probability that it will land below the sixth step and heads up is
`(1)/(14)`

Explanation:

Given : You accidentally dropped a coin from the top of 7 stairs.

To find : What is the probability that it will land below the sixth step and heads up?

Solution :

A coin has two sides - head and tail.

Probability of getting head is

`P(H)=(1)/(2)`

Total stairs are 7.

Coin will land below the sixth step i.e. it land on 7th step.

So, Probability of landing coin on below the sixth step is

`P(L)=(1)/(7)`

Now, The probability that it will land below the sixth step and heads up is

`P=(1)/(2)* (1)/(7)`

`P=(1)/(14)`

Therefore, The probability that it will land below the sixth step and heads up is
`(1)/(14)`