Question

Find the number of permutations of the first 10 letters of the alphabet, taking 3 letters at a time.



1040


980


720


630

Answer 1

@UnkleRhaukus

Answer 2

@ganeshie8

Answer 3

well a simple method is

Answer 4

would my answer be 720?

Answer 5

@campbell_st

Answer 6

that is my answer... and it makes sense...

permutations and combinations use formula... but what you need to try and do is come up with a simple method like this for permutations.

Answer 7

Thank you