Question

Please help:)))

Answer 1

Imagine you have 6 slots A through F

How many ways are there to fill those 6 slots if you have 7 items to choose from? Hint: combination formula

Answer 2

42?

Answer 3

try to think of it another way: how many ways are there to NOT pick that 7th item?

Answer 4

im not sure how to solve this with the combo formula

Answer 5

you have 1 slot. How many ways are there to fill it? you can choose from a pool of 7

Answer 6

6

Answer 7

7 actually

Answer 8

there are 7 ways to pick from a pool of 7

Answer 9

oh is it 7! ? which would equal 5040

Answer 10

there are 7 ways to pick 6 items (order doesn't matter)

Answer 11

ok

Answer 12

do you see why?

Answer 13

yes there are 7 different ways to fill in 6 slots

Answer 14

ok so there are 7 different ways to pick ALL music or memory experiments

Answer 15

how many ways are there to pick 6 items from a pool of 9?

hint:
combination formula
\[\LARGE _n C _r = \frac{n!}{r!*(n-r)!}\]