Question

When we use a graphing calculator and use nCr or nPr, are these with or without repetitions?

Answer 1

Without repetitions, nPr is when the order matters and nCr the order does not matter

Answer 2

I am aware that with repetitions, for permutations you can do n^r

what about combinations? or do I have to memorize those formulas?

Answer 3

i guess yes

Answer 4

lol what i just wrote doesn't make sense

Answer 5

final conclusion: memorize formulas

Answer 6

calculator=without repetitions

Answer 7

yes it's not too hard :P

Answer 8

unless there is some key on the calculator for repetitons?

Answer 9

i don't know never used calc for these type of questions

Answer 10

if they end up with something like 40!

Answer 11

i think you would need it

Answer 12

and one more quick question, which formula is this?

Answer 13

10 numbers are left you can use calculator for those 10 numbers :P