Probability with Permutations and Combinations | Probability |

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Lesson 4 Probability with Permutations and Combinations
Grade 10 Adv Module 7 Probability
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[@tenvshii]

Thank you sooo muchh!!!! this is so helpful, thank you!

[@bestmathuae]

You are most welcome 😊

[@user-tm9me5qr2q]

Thank you I'm 10 general and we study this lesson in term 3 this is so helpful❤️❤️

[@Hi-nc5kg]

thank you mr , can you do lesson 5 for class 10

[@bestmathuae]

I will try to do them soon. With my personal stuff going on, it is being hard to manage making the videos.
I will try to do it by tomorrow.

[@bestmathuae]

Lesson 7.5: ruclips.net/video/s9eCNS34XLs/видео.html

[@user-md2vv5pl7u]

Fifteen boys and fifteen girls entered a drawing for four free movie tickets. What is the probability that all four tickets were won by girls?
.
Question 25 in the book.

[@bestmathuae]

Here only boys and girls is mentioned, hence the order is not of importance. So it is a Combination problem.
Probability = Favourable/Desired Outcomes / Total Outcomes
Desired Outcomes = 15C4 = 1,365
Total Outcomes = 30C4 = 27,405
Probability = 1365/27405 = 13/261 = 4.98%