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There Are 25 Discs Numbered 1 to 25. They Are Put in a Closed Box Anx Shaken Thoroughly. a Disc is Drawn at Random from the Box. Find the Probability that the Number on the Disc is : - ICSE Class 10 - Mathematics

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Question

There are 25 discs numbered 1 to 25. They are put in a closed box anx shaken thoroughly. A disc is drawn at random from the box. 
Find the probability that the number on the disc is :
(i) an odd number
(ii) divisible by 2 and 3 both.
(iii) a number less than 16.

Solution

(i) an odd number = {1,3,5,7,9,11,13,15,17,19,21,23,25}

    ∴ Probability of an odd number =`13/25`

(ii) Divisible by 2 and 3 both = { 6,12,18,24 }

 Probability of the number divisible by 2 and 3 both = `4/25`

(iii) Probability a number less than 16 `=15/25 = 3/5`

  Is there an error in this question or solution?

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Solution There Are 25 Discs Numbered 1 to 25. They Are Put in a Closed Box Anx Shaken Thoroughly. a Disc is Drawn at Random from the Box. Find the Probability that the Number on the Disc is : Concept: Random Experiments.
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