Question

A bag contains 2 red, 5 blue, and 7 yellow marbles. Find the probability of drawing a yellow or a red.

Answer 1

Answer:

drawing a red marble would be 2 in a 14 or 1/7 chance n drawing a yellow would be 1/2.

Answer 2

The probability of drawing a yellow marbles is 1/2

What is probability ?

Probability means the quality or state of being probable; the extent to which something is likely to happen or be the case

We have,

Bag contains marbles

Red=2

Blue=5

Yellow=7

Total marbles in bag = 2+5+7=14

The total number of ways of selecting one marble out n(s) = 14$C_{1}$

                                                                                                      = 14 ways

Let E be the event of selecting yellow marbles

Since, the bag contains 7 yellow marbles

one yellow marble can be draw from 7 yellow n(E) =7$C_{1}$

                                                                                        = 7 ways

We know the formula,

P(E)= n(E)/n(s)

       = 7/14

        = 1/2

Hence, the probability of drawing a yellow marbles is 1/2

To learn more about probability from here

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