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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: a Perfect Square - 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: 

a perfect square 

 

Solution

Total possible outcomes=20 

Favorable outcomes for a perfect square = 1,4,9,16 

Number of favorable outcomes=4 

P(a perfect square) =`4/20=1/5`

  Is there an error in this question or solution?
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: a Perfect Square Concept: Probability - A Theoretical Approach.
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