PUNE MCA Exam 2017 Question Paper with answers for online practice

Question : 12 of 41

Marks: +1, -0

Seven digit from the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9 are chosen at random then the probability that a number formed of 7 digit r7 and r7 is divided by 9 is;