Question

If you are picking a number between 1-20 what is the probability that you will pick an even number or a multiple of three?

Answer 1

probability that you will pick an even number = 10÷20

probability that you will pick multiple of three = 6÷20

Answer 2

Answer:

P (Picking an even number) = 1/2

P (Getting a multiple of three) = 1/3

Step-by-step explanation:

Picking up number between 1-20

Sample space = {$2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19$}

Total number of outcomes = 18

Even numbers = $2, 4, 6, 8, 10, 12, 14, 16, 18$

Number of even's = 9

Multiples of 3 = $3, 6, 9, 12, 15, 18$

Number of multiples of 3 = 6

Probability of picking an even number = Total number of even's/Total

                                                                    no. of outcome

⇒ P(Picking an even number) = 9/18

                                                    = 1/2

Probability of getting a multiple of three = Total multiple of 3/ Total no.

                                                                      of outcomes

⇒ P(Getting a multiple of three) = 6/18

                                                       = 1/3

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