Question

C(66;25) / C(70;25)

How would I solve this? ^

Answer 1

I just need it interpreted mainly

Answer 2

@Luis_Rivera @Mertsj

Answer 3

Is that 66 choose 25 divided by 70 choose 25 or what?

Answer 4

it has to do with probability

Answer 5

the semicolon can be a comma too

Answer 6

\[\frac{66!}{25!(66-25)!}\]

Answer 7

Evaluate that and divide it by this:
\[\frac{70!}{25!(70-25!)}\]

Answer 8

im getting an error for the 2nd one

Answer 9

got 2.933706409 for the first

Answer 10

my calc says: work overflow

Answer 11

\[\frac{\frac{66!}{25!41!}}{\frac{70!}{25!45!}}=\frac{66!}{25!41!}\times \frac{25!45!}{70!}=\]

Answer 12

\[\frac{66!45\times44\times43\times42\times41!}{41!70\times69\times68\times67\times66!}=\]

Answer 13

\[\frac{45\times44\times 43\times 42}{70\times69\times68\times67}\]

Answer 14

Perhaps you can finish it.

Answer 15

What is the probability that at least 2 people in a random
group of 6 people have a birthday on the same day of the
week?

Answer 16

can you help me with this question too?

Answer 17

the answer is p(7,6)/(7^6)=.0428
1-.0428=9572....
but i dont know how to put the numerator into a calc.

Answer 18

@Mertsj

Answer 19

p(7,6)=7!/(7-6)!