Concept explainers
To find: The probability that the number of the card is divisible by 5 and the selected number is either 1 or prime.
Answer to Problem 39RE
The probability that the card is of number divisible by 5 is 0.2, the probability that the card is 1 is 0.01 and the probability that number is both prime and 1 is 0.26.
Explanation of Solution
Given:
The number on card is from 1 to 100.
Calculation:
There are 20 number between 1 to 100 that are divisible by 5, so the
Consider the probability of the event that the number on the card is divisible by 5 is 0.2 is,
The probability for the event that the card selected from the sample space is 1 is,
The number of prime numbers between 1 and 100 is 25, so the probability that the number is prime is,
Consider the fact that the number is both prime and 1, then the probability is,
Chapter 13 Solutions
Precalculus
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