[計量] 請教兩題計量
A gardener is going to plant 2 red rosebushes and 2 white rosebushes. If the
gardener is to select each of the bushes at random, one at a time and plant
them in a row, what is the probabilitythat the 2 rosebushes in the middle of
the row will be thw red ones?
Ans: 1/6
Three friends are playing a game in whicheach person simultaneously displays
one of three hand signs: a clenched fist, an open palm, or two extended fingers.
How many different combinations of the signs are possible?
Ans:10
Thanks!
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 61.59.14.137
討論串 (同標題文章)
以下文章回應了本文：
計量
1
1
完整討論串 (本文為第 1 之 21 篇)：
計量
1
1
計量
2
4
計量
0
1
計量
1
1
計量
3
11
計量
2
8
計量
4
6
計量
1
1
計量
3
5