Ok, Yes your answer is right.
Something seemed odd so I used to the hypergeometric distribution formula to make sure. 9/15 is the correct answer
Can anybody tell wether i am right or not.
Q. Two WORDS are chosen from word "SUMMER", what is probability that at least M is there?
Total Nos of chosen word are : 6C2=15
SU SM SM SE SR
UM UM UE UR
MM ME MR
SO P(at least one is M)=9/15
Thanks in Advance...
. . .Good!
I solved it from "the other end" . . .
How many words have no M's?
There are 2 M's and 4 Others.
We want 2 of the Others.
. . There are: . words with no M's.
Hence, there are: . words with at least one M.