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Numbers 1 to 10 are written on ten separate slips (one number on one slip), kept in a box and mixed well. One slip is chosen from the box without looking into it. What is the probability of.
(i) getting a number 6?
(ii) getting a number less than 6?
(iii) getting a number greater than 6?
(iv) getting a 1-digit number?
Asked by Madhu Last Modified
Answer (i) There are 10 slips in the box. However, 6 is written only on 1 slip.
Probability of getting a number 6 = 
(ii) The numbers less than 6 are 1, 2, 3, 4, 5.
Probability of getting a number less than 6 = 
(iii) The numbers greater than 6 are 7, 8, 9, 10.
Probability of getting a number greater than 6 = 
(iv) There are 9 numbers which are single digit numbers.
1, 2, 3, 4, 5, 6, 7, 8, 9
Probability of getting a single digit number = 
Outcomes are {1,2,3,4,5,6,7,8,9,10}
(i) Probability of getting a number 6=number of slips having 6/total number of slips=1/10=0.1
(ii) Probability of getting a number less than 6=number of slips having a number 1,2,3,4, or 5/total number of slips
=5/10=0.5
(iii) Probability of getting a number greater than 6=number of slips with number 7,8,9, or 10/total number of slips
=4/10=0.4
(iv) One gidit numbers are 1,2,3,4,5,6,7,8,9
Probability of getting a one digit number=number of slips having one digit number/total number of slips
=9/10=0.9
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