rodger159

I think in all exams we will have a calculator mind, and I cant see myself ever needing to work it out without a calculator in life But thanks! Double checking answers is always a good idea, but when I can simply key the numbers into a calculator along with the nCr and nPr it shouldn't be a problem anyway.

Ah well that should be it then! Thanks for your help! So much for "yeah there wont be much maths if you start computer science here" BAM, books full of it.

I'm awful at maths and having an poor lecturer to add to that doesn't make things much better. Ah thanks, I'll have to make sure I get a decent calculator with that button on. Never knew you could do that, I'm assuming nCr just means work out the combination? and nPr for the permutations? As 14 nCr 1 is 14 would timing them together give the answer? As in 278256 * 14 = 3895584

No idea what you mean by the nCr function. Just the windows one at the moment. Haven't got around to buying a proper one, can't even find the E button on the windows one?!

factorial of 34 / factorial 5 * factorial 29 gives me the the answer: 8841761993739701954543616000000 for the first part. Surly not?!

Hey, been given a few questions, done most of them but have no idea how to even start this, I would go to a lecturer but I feel it needs doing before then. Question: A particular lottery has the following rules: - you choose 5 numbers, with no repeats, from 34 numbers. -you then choose an additional bonus number from 14 numbers. This step does not depend on how you choose the first numbers. -To win the jackpot, your first five numbers must match the first five numbers drawn from 34, in any order, AND your bonus number must match the one drawn from 14. If you wanted to be guaranteed to win this lottery jackpot, what is the minimum number of tickets you would need to purchase? I thought first one would have been C(34, 5) but that just gives massive numbers back, and C(14,1) for the second but no idea how these would even link up. How would I even go about starting this? Thanks. Accidentally put this in the homework section without realising there is a computer science section, sorry.