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Probability question

Anyone have a clue on how you would do these two questions (c) and (d)



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Original post by skyhigh12
Anyone have a clue on how you would do these two questions (c) and (d)



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Knowing the sort of replies you could get on TSR, it would be useful if you tell us what stage you are at. GCSE? S1? S2?
Original post by skyhigh12
Anyone have a clue on how you would do these two questions (c) and (d)



The clue is given in the question - tree diagram

Your branches should read 1 and Not 1
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skyhigh12
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It's gcse level, I just need someone to explain the concept, how you would work it out

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RVNmax
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Original post by skyhigh12
It's gcse level, I just need someone to explain the concept, how you would work it out

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You tried to list out all the possible combinations that would work. That can sometimes be a useful way. In this case it works. You listed 15 combinations working out of a possible 216.

Therefore the answer is simply ___?

An alternative method is the tree diagram method, as mentioned by a previous poster. I would advise you to have a read on that on the internet just for future knowledge and to check your answer.

After you have a read, feel free to come back to this thread and for any queries you may have about that method. :smile:

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