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Probability

there are 90 players in a tennis club. Of these, 23 are juniors, the rest are seniors. 34 of the seniors and 10 of the Juniors are male. There are 8 juniors who are left-handed, 5 of whom are male. There are 18 left-handed players in total 4 of whom are female seniors.

What is the probability that
(a) a right-handed player selected at random is not a junior? (ans: 19/24)
(b) a right-handed female player selected at random is a junior? (ans: 10/39)

I couldn't solve this question...could anyone please help to explain and show me the solution of these question? The venn diagram will be prepared. Your kindness would be greatly appreciate.SmartSelectImage_2018-06-03-23-01-56-compressed.png.jpeg
Reply 1
Avatar for Gichin
Gichin
3
Draw a table it works every time
Reply 2
Avatar for AwakeFever
AwakeFever
OP
9
I able to get the answer for (a) but still unable to find the solution for (b) maybe something is wrong with my table. Could you help me?EB9AE3F9-24C1-4341-8328-A9FA60C116C2.jpg.jpeg
Original post by AwakeFever
I able to get the answer for (a) but still unable to find the solution for (b) maybe something is wrong with my table. Could you help me?


RH female players occupy the two cells with an X.

So, there are ?? in total.

And of those ?? are Juniors.

EB9AE3F9-24C1-4341-8328-A9FA60C116C2.jpg.jpeg

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