Question

I have to evaluate the expression and type it out as an integer or simplified fraction.
I will type it out in just a sec.............

Answer 1

The equation looks like this only with the 18 and 17 and 19 and 18 on each line being low and equal\[1-\frac{ _{18^{P}_{17}} }{_{19^{P}_{18}} ? }\]

Does anyone have any idea as to what this is? Or how to solve it? Or what the answer is?
I need to solve it by simplifying it.

Answer 2

(It doesn't have a question mark in the original problem by the way

Answer 3

\[\large 1-\frac{ ^{18}P_{17} }{^{19}P_{18}} \]

Answer 4

like this ?

Answer 5

So like 18 - pick - 17?

Answer 6

Yes like that @ganeshie8 . :-D

Answer 7

Well no wait it is more like the P is the exponent of them.

Answer 8

\[\huge 1-\frac{ _{18}P _{17} }{ _{19}P _{18} }\]

Answer 9

YES. Like that @iambatman . :-D

Answer 10

Is this problem something to do with the permutation function? @ShortStaticBurst

Answer 11

\[\large _{18}P _{17} = \frac{ 18! }{ (18-17)! }\]

\[_{19}P _{18} = \frac{ 19! }{ (19-18)! }\]

Do you know what permutation is?

Answer 12

Do you know if this expression is in the context of another problem?

Answer 13

I know what permutation is somewhat. :-)
But not entirely :-(

Answer 14

http://openstudy.com/users/iambatman#/updates/539aaeb2e4b0eb8de56cd305

Answer 15

I did like a little tutorial for it not too long ago..you can use it as a reference.

Answer 16

This expression is not in the context of another problem.
It asks you to work it by evaluating the system and type either an integer or a simplified fraction as the answer

Answer 17

if this is a permutation notation, we have the following: