How many ways can 9 numbers be arranged on a small rotating wheel relative to a fixed point?

Consider a basket that contains 15 slips of paper numbered from 1 to 15. Two slips of paper are drawn at random. What is the probability of drawing 2 even numbers?

Question

How many ways can 9 numbers be arranged on a small rotating wheel relative to a fixed point? 



 Consider a basket that contains 15 slips of paper numbered from 1 to 15. Two slips of paper are drawn at random. What is the probability of drawing 2 even numbers?

anonymous · Answer

probability first number is even is $\frac{7}{15}$ and the probability the second is even given that the first one is even is $\frac{6}{14}$ 
multiply to get your answer

rea201 · Answer

this is for the second q right

rea201 · Answer

Oh and it is pre calc

rea201 · Answer

@satellite73

anonymous · Answer

yeah that is the second one
actually it is probability

rea201 · Answer

ok thanks

anonymous · Answer

For  the first question 
$$9\times8\times7\times6\times5\times4\times3\times2\times1$$

anonymous · Answer

Square ABCD has side length equal to 12. E is the midpoint of AD and F is the midpoint of DC. What is the area of quadrilateral BEFC?