Question

A bag contains 6 blue marbles, 5 yellow marbles, 3 white marbles, and 1 red marble.

What is the probability of not selecting a white marble?

A. 2/3

B. 3/4

C. 4/5

D. 1/5

Please explain how you got the answer so I can learn

Any links and you will be reported please help

Answer 1

The total number of marbles in the bag is:

6 blue marbles + 5 yellow marbles + 3 white marbles + 1 red marble = 15 marbles

The probability of not selecting a white marble can be calculated as follows:

Number of non-white marbles / Total number of marbles

There are a total of 15 - 3 = 12 non-white marbles in the bag (6 blue marbles + 5 yellow marbles + 1 red marble).

So the probability of not selecting a white marble is:

12 / 15 = 4/5

Therefore, the answer is C) 4/5.

Explanation:

Answer 2

Total number of marbles:

`6 + 5 + 3 + 1 = 15 \: marbles`

Total number of possibilities excluding white marbles:

`6 + 5 + 1 = 12 \: marbles`

The probability of an event occuring is given by:

`p(a) = (number \: of \: possibilities)/(total \: number \: of \: possibilities)`

`p(a) = (12)/(15) = (4)/(5)`

Letter C