Saturday

October 25, 2014

October 25, 2014

Posted by **Tim** on Saturday, August 23, 2008 at 3:41pm.

Three boys and three girls line up to go in the front door.

In how many ways can they line up?

My answer: 720

How many ways can they line up if the first one in line is a girl and then alternates by gender, a girl, a boy...

My answer: 3*3*3*2*2*1*1=108

Find the probabiltiy that the first person in line is a girl and the line alternates by gender.

My answer: 1/120

- Probability -
**bobpursley**, Saturday, August 23, 2008 at 3:45pmfirst, 6!, correct

second 3*3*2*2*1*1

third: 24/720*1/2

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