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  • Cards numbered 7 to 40 were put in a box. Poonam selects a card at random. What is the probability that Poonam selects a card which is a multiple of 7?      

Cards numbered 7 to 40 were put in a box. Poonam selects a card at random. What is the probability that Poonam selects a card which is a multiple of 7?

 

 

 

 
 
 
 
 

Answers (1)

Multiples of 7 between 7 to 40 = 7,14, 21, 28, 35.

There are a total of 5 multiples of 7

                     Total cards = 40-7 = 33

                      Including 7 = 33 + 1 =34

                So, Total cards = 34

                \mathrm{\text{Problability} = \frac{Favourable\ Outcomes}{Total\ Outcomes}}

                \mathrm{P =\frac{5}{34}}

Posted by

Safeer PP

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