You own 24 CDs. You want to randomly arrange 6 of them in a CD rack. What is the probability that the rack ends up in alphabetical order?
The letters in the word MATHEMATICS are arranged randomly.
What is the probability that the first letter is M?
2007-10-22 17:54:02 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
I think the probability of the 6 CDs ending up in alphabetical order is [1/6] [1/5] [1/4][1/3][1/2] [1] or 1 chance out of 720. Since there are two letter Ms in mathematics and 11 letters total then you have two chances out of eleven that the first letter selected will be an M
2007-10-22 18:32:16 · answer #1 · answered by Mr. Un-couth 7 · 0⤊ 0⤋
the probability that M is arranged first is 1 out of 11. Because there are 11 letters in mathematics so the chance that M is first is 1:11.
2007-10-23 01:02:07 · answer #2 · answered by Anonymous · 0⤊ 1⤋
I say its 2/11 because there are 2 Ms
2007-10-23 01:10:51 · answer #3 · answered by e2theitheta 2 · 0⤊ 0⤋
p = (1/24)(1/23)(1/22)--------------(1/1)
= 1/ product of (24)(23)(22) -----(1)
2007-10-23 01:14:38 · answer #4 · answered by Anonymous · 0⤊ 0⤋