question_answer

Without looking at any page, a number is   chosen at random from the page. What is the probability that the digit at the units place of the number chosen is greater than 6?                                 

A) \[\frac{3}{10}\]                         

B) \[\frac{6}{10}\]             

C)  \[\frac{4}{10}\]                        

D)  None of these

Correct Answer: A

Solution :

Since any digit from 0 to 9 can occur at units place. Total number of possible outcomes = 10 Favourable outcomes when number chosen is greater than 6 = {7, 8, 9} i.e., 3 in number. Number of favourable outcomes = 3  Required probability