A printing machine, capable of only printing the 10 digits, prints the right digit 12% of the time. Whenever the machine prints erroneously, all wrong possibilities are equally likely.

If a random key is pressed twice and a same digit comes out both times, what is the probability that it was the correct one?

(In reply to A Printer by CodyDunning)

What does printing of shipping labels have any rellevance with the given problem?

Edited on April 9, 2024, 8:48 am

Posted by K Sengupta on 2024-04-09 07:11:16