A number is chosen randomly from the numbers 1-20. If event A = {a multiple of 5}, what is the value of P(A')?
- A number is chosen randomly from the numbers 1-20. If event A = {a multiple of 5}, what is the value of P(A')?
Jon S.
answered • 04/21/21
Patient and Knowledgeable Math and English Tutor
How many numbers between 1 and 20 are a multiple of 5? Divide that number by 20 to get P(A). P(A') = 1 - P(A).
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Lia K.
would it be 17/20? I did: Multiples of 5 between 1-20 (5,10,15) 3 numbers, 3/20, P(A) + P(A') = 1 P(A') = 1 - P(A) = 1 - 3/20 = 17/2004/21/21