# Probability question

anyone good at maths? This is annoying i know the answer should be simple but i cant work it out!

Q1- 10 people buy a raffle ticket for a chance of winning a cake. Each have an equal chancing of winning the cake. What is the probability of 1 person winning the cake?

Q2 - This time around 10 people buy a raffle ticket but this time there are two cakes to win. What is the probability of 1 person winning a cake?

The first question is easy the second one im not sure about.

any ideas?

Q1- 10 people buy a raffle ticket for a chance of winning a cake. Each have an equal chancing of winning the cake. What is the probability of 1 person winning the cake?

Q2 - This time around 10 people buy a raffle ticket but this time there are two cakes to win. What is the probability of 1 person winning a cake?

The first question is easy the second one im not sure about.

any ideas?

1 in 5

Q2. 1 in 5 chance of winning

2. 0% chance of one person winning a cake, either two people will win a cake or one person win two cakes.

Haha

you sure about that? surely after the first cake in question 2 has been won,the odds are then one in nine for the remaining players?

Original Poster Banned

this is what my issue is that the chance of winning the first cake in Q2 is 1/10 and the probability of winning the second cake is 1/9 but what is the probability of winning a cake?

Mississippi mud pie.

1 chance in 10

then 1 chance in 9

overal, a 2 in 9.5 percent chance, or effectively, 1 in 4.75.

or, sod all chance cos by the time you've all worked it out, I've eaten the cake.

None, usually a fix and the old lady from the Womens Institute will have hoovered it down with her earl grey :whistling:

Original Poster Banned

for the second question if the person wins the cake they can not win the second cake also.

1) 1/10 or 100% depending on how the question is interpreted

2) 0% (as either 1 person has 2 or 2 people have 1) or 19/90 chance based on a 1/10 chance becoming a 1 in 9 chance

Then I should win all 3 cakes.

hth