[問題]GWD 12-27

[Flory]

A box contains exactly 24 balls, of which 12 are red and 12 are blue. If two balls are to be picked from this box at random and without replacement, what is the probability that both balls will be red?

Ans: A. 11/46

i got B. 1/2*1/2 = 1/4

i'm sorry to ask so many questions....

[himax67]

題目說隨機取出且不放回
故所求為12/24*11/23=11/46

[Flory]

謝謝himax67的大力相助^^