Which pair of numbers is relatively prime? a. 14 and 91 b. 14 and 581 c. 201 and 770 d. 12 and 105

C 201 and 770

Step-by-step explanation:

14 and 91 have a common factor of 7 - so not A

B No - as 7 is  a factor of 14 and 581

D 12 and 105  are both divisible by 3

So its C

the answer   is 200

step-by-step explanation:

this is a problem about poisson probabilities.   i don't know if you've

already studied poisson distributions, or if you have a place to look

to read more about the subject.  

here's how you can see a poisson distribution coming.   when there are

a lot of events that may happen at any time (or any place), and when

you're counting how many of them happen at a particular time (or a

particular place), and each event is independent of the others, then

the result is a poisson distribution.   this is roughly true for the

chocolate chips; one chip being in a cookie has only a small effect on

the probability that another chip will be in the cookie.

once you know you have a poisson distribution, you know a lot.   there

is only one parameter to a poisson distribution, so if you know the

mean, you know everything.   the form of the distribution is

  probability of n chips = {[e^(-x)]*(x^n)} / (n! )