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Cards Marked with Numbers 1, 2, 3 ……… 20 Are Well Shuffled and a Card is Drawn at Random. What is the Probability that the Number on the Card Is: Divisible by 3 - ICSE Class 10 - Mathematics

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Question

Cards marked with numbers 1, 2, 3 ……… 20 are well shuffled and a card is drawn at random. What is the probability that the number on the card is: 

divisible by 3 

Solution

Total possible outcomes=20 

Favorable outcomes for a number divisible by 3=3,6,9,12,15,18 

Number of favorable outcomes=6 

P(divisible by 3)= `6/20=3/10`

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Solution Cards Marked with Numbers 1, 2, 3 ……… 20 Are Well Shuffled and a Card is Drawn at Random. What is the Probability that the Number on the Card Is: Divisible by 3 Concept: Probability - A Theoretical Approach.
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