Saturday

November 29, 2014

November 29, 2014

Posted by **Maria** on Wednesday, January 30, 2013 at 3:29pm.

A) how many different groups containing 3 people can be chosen from the 12 members of the singing group?

B) what Is the probability that mike and Jo will both be in the selected group?

- Math (probability) -
**bobpursley**, Wednesday, January 30, 2013 at 3:38pmb. three choices

?MJ

?JM

J?M

JM?

MJ?

M?J so there are six ways to get it, so probability is 6*(1/12*1/11*10/10)

a. 3!/12!9!

- Math (probability) -
**bobpursley**, Wednesday, January 30, 2013 at 3:40pmoops a. 12!/(3!9!)=12*11*10/6=11*10*2

check that

**Answer this Question**

**Related Questions**

Math - 2. Three members of a 12 person singing group are going to be chosen to ...

math - The integers from 1 through 10 (inclusive) are divided into three groups...

math - The integers from 1 through 10 (inclusive) are divided into three groups...

math - The integers from 1 through 10 (inclusive) are divided into three groups...

heeeeeeeeeeeeelp math - The integers from 1 through 10 (inclusive) are divided ...

heeeeeeeeeeelp math - The integers from 1 through 10 (inclusive) are divided ...

pls heeeeelp math - The integers from 1 through 10 (inclusive) are divided into ...

maths - The integers from 1 through 10 (inclusive) are divided into three groups...

English - Project. 1. Listen to the song carefully and sing the song all ...

English - 1. Listen to the following chant carefully. 2.Sing the chant together ...