John wrote a phone number on a note that was later lost. John can
remember that the number had 7 digits, the digit 1 appeared in the
last three places and 0 did not appear at all. What is the probability
that the phone number contains at least two prime digits?
a) 15/16
b) 11/16
c) 11/12
d) 1/2
e) 5/8
remember that the number had 7 digits, the digit 1 appeared in the
last three places and 0 did not appear at all. What is the probability
that the phone number contains at least two prime digits?
a) 15/16
b) 11/16
c) 11/12
d) 1/2
e) 5/8
