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Need help TO GET AN A* MATHS GCSE

first question:
http://prntscr.com/aprqom
i HATE Probability
Original post by LearnForYOU
first question:
http://prntscr.com/aprqom
i HATE Probability

1. probability of getting 1st orange sweet = 6/n
2. probability of getting 2nd orange sweet = 5/(n-1)
probability of both = 1. x 2. = 30/(n^2-n) = 1/3
30 = n^2 - n/3
90 = n^2 - n
n^2 - n - 90 = 0
just draw the probability tree and work from there :smile:

Spoiler

Original post by surina16
just draw the probability tree and work from there :smile:

Spoiler


ikr
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LearnForYOU
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Original post by DotDotDot...
1. probability of getting 1st orange sweet = 6/n
2. probability of getting 2nd orange sweet = 5/(n-1)
probability of both = 1. x 2. = 30/(n^2-n) = 1/3
30 = n^2 - n/3
90 = n^2 - n
n^2 - n - 90 = 0


thanks mate
that question gone viral last summer so you can find the answer anywhere even on the BBC news :rofl:
Original post by fatima1998
that question gone viral last summer so you can find the answer anywhere even on the BBC news :rofl:


ikr u can jus find the solution on google images too lol
Original post by rayestar
ikr u can jus find the solution on google images too lol


lol... thats like wowww...
never seen a celebrity going that viral as maths question :rofl:

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