(adsbygoogle = window.adsbygoogle || []).push({}); In how many ways can 5 distinct Martians, ten distinct Vesuvians and eight distinct Jovians wait together in line if no two Martains stand together>

2. 10_p_5 = 10! & 5! but what about 8? and 2?

3. 10! = 10*9*8*7*6*5*4*3*2*1

8! = 8*7*6*5*4*3*2*1

5! = 5*4*3*2*1

10*9 = 90/2 = 45?

I am so lost.. I am not a programmer..but required to take this class for my major!! Please anyone help me out?!?!

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Premutations problem help

**Physics Forums | Science Articles, Homework Help, Discussion**