Question

an integer is choosen between 70 and 100 find the probability a) q prime number b) divisible by 7

is my answer correct ​

Answer 1

Answer:

yeah it's correct.............

Answer 2

Answer:

(a) 5/31 (b) 5/31

Step-by-step explanation:

Given: Numbers between 70-100

To find (a) Probability of prime numbers

            (b) Divisible by 7 between 70-100

Solution: (a) Probability of prime numbers

      - prime numbers between 70-100 are 71,73,79,83,89 [ 5 numbers]

       Probability = {Number of possible outcomes }/{Total number of outcomes}

   Therefore P(A) = n(A)/n(T) = 5/31

           (b) Probabilities of numbers divisible by 7 are 70,77,84,91 and 98

  Therefore P(A) = n(A)/n(T) = 5/31