Open In App

GATE | GATE CS 2013 | Question 62

Like Article
Like
Save
Share
Report

Out of all the 2-digit integers between 1 and 100, a 2-digit number has to be selected at random. What is the probability that the selected number is not divisible by 7?

(A) 13/90
(B) 12/90
(C) 78/90
(D) 77/90


Answer: (D)

Explanation: There are total 90 two digit numbers, out of them 13 are divisible by 7, these are 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98.
Therefore, probability that selected number is not divisible by 7 = 1 – 13/90 = 77/90.
So, option (D) is true.


Quiz of this Question


Last Updated : 30 Oct, 2017
Like Article
Save Article
Previous
Next
Share your thoughts in the comments
Similar Reads