Sum
A bag contains 100 identical marble stones which are numbered 1 to 100. If one stone is drawn at random from the bag, find the probability that it bears:
a number divisible by 5
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Solution
Total number of possible outcomes=100
Number which are divisible by 5=5,10,,,15,20,,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95,100
Number of favorable outcomes=20
p(number diviisible by 5)=`20/100=1/5`
Concept: Probability - A Theoretical Approach
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