Rita puts 9 pairs of black socks and 8 pairs of white socks in a drawer She takes 3 socks

ON EVERY ATTEMPT TI MAY BE A BLACK OR A WHITE SOCKS THUS SAMPLE SPACE=8AND THE ELEMENTS ARE {(BBW,BBB,BWB,BWW,WBB,WBW,WWB,WWW} THUS FAVORABLE OUTCOMES=4 THUS REQUIRED PROBABLITY=4/8=1/2
14 years agoHelpfull: Yes(10) No(3)

9/22
14 years agoHelpfull: Yes(5) No(3)
6/11
14 years agoHelpfull: Yes(5) No(0)
9/17
14 years agoHelpfull: Yes(2) No(1)
171/374
14 years agoHelpfull: Yes(1) No(1)
9/17
14 years agoHelpfull: Yes(1) No(3)
6/11
14 years agoHelpfull: Yes(1) No(1)
Probability of getting a black socks = 63/170
n(S)=17C3
n(E)=9C1*8C2
14 years agoHelpfull: Yes(1) No(1)
21/22
14 years agoHelpfull: Yes(1) No(2)
1053/2992
14 years agoHelpfull: Yes(1) No(1)
3/187 ans
14 years agoHelpfull: Yes(0) No(1)
35/51
14 years agoHelpfull: Yes(0) No(1)
18/187
14 years agoHelpfull: Yes(0) No(1)
9/11
14 years agoHelpfull: Yes(0) No(1)
9/11
14 years agoHelpfull: Yes(0) No(1)
P(getting a pair of black socks) = 0.395
14 years agoHelpfull: Yes(0) No(1)
1994/4913
14 years agoHelpfull: Yes(0) No(1)
9/22=0.40909
totally 18 black socks and 16 white socks = 34 socks...
success is selecting 2 0r 3 black socks from 34 socks...

ans = (18C2/34C2)+(18C3/34C3) = 9/22
14 years agoHelpfull: Yes(0) No(1)
9*32/34C3=9/187
14 years agoHelpfull: Yes(0) No(1)
51/187. Here totl number is not 17. Its 34. So the probability is 18c2/34c2
13 years agoHelpfull: Yes(0) No(1)
9/352
13 years agoHelpfull: Yes(0) No(1)
want to select three socks(not 3 pairs)
so two socks must be black ,from 9 pairs =18 socks =>18C2
and one sock from (8+9-1)*2=32
so answer 32*18C2
7 years agoHelpfull: Yes(0) No(0)

Rita puts 9 pairs of black socks and 8 pairs of white socks in a drawer. She takes 3 socks. What is the probability that we get a pair of black socks?