Question

give the answer for this question.

Answer 1

Given that a two-digit number is formed with the digits 3,5 and 7.

Required two-digit number = {35,37,53,57,73,75}

                                    n(S)    = 6.



Let A be the event of getting a number greater than 57.

n(A) = {73,75}
 
        = 2.


Therefore Required probability P(A) = n(A)/n(S)

                                                             = 2/6

                                                             = 1/3.


Hope this helps!