Question

if you think the probability of getting A on exam is 10% ,while the probability of getting B on the exam us 30%,what the probability of getting A or B on the exam?​

Answer 1

The probability of getting an A or B on the exam is 40%

Step-by-step explanation:

Step 1 of 2

Given

Probability of exam A=10%

Probability of exam B= 30%

To find

Probability of getting an A or B?

Step 2 of 2

Probability of A or B = P(a)+P(b)

                                  = 10/100+30/100

                                  = 1/10+3/10

                                  = 4/10

                                  = 4/10*100

                                  = 40%

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