Class 9 Math All topics Probability
families with children were selected randomly, and the following data were recorded:
 No. of girls in a family   
 No. of families   
Compute the probability of a family, chosen at random, having
(i) girls
(ii) girl
(iii) No girl
Also check whether the sum of these probabilities is .
Solution: (i) Number of families having girls
Total families     
girls



(ii) girl

(iii) No girl

Sum of all these probabilities 





Sum of these probabilities

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Similar topics
introduction to trigonometry
functions
some applications of trigonometry
quadratic equations
surface areas and volumes
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Connecting you to a tutor in 60 seconds.
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introduction to trigonometry
functions
some applications of trigonometry
quadratic equations
surface areas and volumes
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