Example 4
On one page of a telephone directory, there were 200 telephone numbers. The frequency distribution of their unit place digit (for Example in the number 25828573, the unit place digit is 3) is given
Without looking at the page, the pencil is placed on one of these numbers, i.e., the number is chosen at random. What is the probability that the digit in its unit place is 6?
Total telephone numbers = 200
Total number of times 6 digit is there = 14
Probability of digit 6 being in the unit place
= 14/200
= 0.07

Made by

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.