Question

Numbers 1 to 10 is 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 greater than 6.
(iii) getting a 1-digit number.

Answer 1

(i) As 6 is written only on one of the ten slips, possibility of getting a number 6 is one. Therefore, probability of getting a number $\frac{1}{10}$
(ii) Number greater than 6 out of ten that are 7, 8, 9, 10.So there are 4 possible outcomes. Therefore probability of getting a number greater than $6=\frac{4}{10}=\frac{2}{5}$
(iii) One digit numbers are 1, 2, 3, 4, 5, 6, 7, 8, 9 out of ten . Therefore probability of getting a 1-digit number =$\frac{9}{10}$