My second questions is two boys and two girls are lined up at random. What is the probability that the girls are separated if a girl is at an end?
So these are my different sample spaces
(B,B,G,G) (G,B,B,G) (B,G,G,B) (G,B,G,B) (B,G,B,G) (G,G,B,B)
Two game titles numbered 1 through nine are selected at random from a box without replacement. If their sum is even what is the probability that both numbers are odd
Well I know that even numbers are 2,4,6,8
So my sums would be 2+2,3+1,4+2,3+3,6+2,5+1,7+1,4+4,7+1,4+4,1+1,5+3
So I have 10 sums and 6 are with odd numbers.
So I thought of doing 6/18 / 10/18 but apparently this is wrong.
My second questions is two boys and two girls are lined up at random. What is the probability that the girls are separated if a girl is at an end?
So these are my different sample spaces
(B,B,G,G) (G,B,B,G) (B,G,G,B) (G,B,G,B) (B,G,B,G) (G,G,B,B)
Hello, homeylova223!
Game titles numbered 1 through nine are in a box.
Two are selected at random without replacement.
If their sum is even, what is the probability that both numbers are odd?
The very worst we can do is list the possible outcomes
. . and count the desirable ones.
. .
. .
PLEASE state both questions in on thread OR create two different threads.
I did not even see the second question.
The given here mean we are only interested in rearrangements of end in a
So to answer this second question, how many ways are there to rearrange so that the rearrangement does not end in G ?