Question

You roll a number cube. Find the probability and write your answer in the simplest form. P(4)= ------------------------------------------- P(not a 2) = ------------------------------------ P(3 or 5) = ------------------------------------

Answer 1

`P(4) = (1)/(6)`

`P(\text{not a 2}) = (5)/(6)`

`P(\text{3 or 5}) = (1)/(3)`

Explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

Number cube:

A number cube is a dice, which has six sides, numbered 1 to 6.

P(4)

One the sides is a 4, thus:

`P(4) = (1)/(6)`

P(not a 2)

Of the 6 sides, one is a 2, and the other 5 are not 2. So

`P(\text{not a 2}) = (5)/(6)`

P(3 or 5)

One sides is 3, other is 5, 1 + 1 = 2. So

`P(\text{3 or 5}) = (2)/(6) = (1)/(3)`