NCERT Class 9 Solutions: Probability (Chapter 15) Exercise 15.1-Part 4
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Probability = Desired Outcome Divide Total Outcome
Q-8 The distance (in km) of engineers from their residence to their place of work were found as follow:
What is the empirical probability that an engineer lives:
I. Less than from her place of work?
II. More than or equal to from her place of work?
III. Within from her place of work?
Solution:
Total number of engineers
Solution I:
Number of engineers living less than from her place of work
Required probability
Solution II:
Number of engineers who live more than or equal to from their work place
Required probability
Solution III:
Number of engineers who live within from their place of work
Required probability
Q-11 Eleven bags of wheat flour, each marked 5 kg, actually contained the following weights of flour (in kg):
Find the probability that any of these bags chosen at random contains more than 5 kg of flour.
Solution:
Total numbers of bags
All bags containing more than 5 kg of flour
Required probability