combinatorics/permutations: Made method to calculate lcm a bit less verbose. Also made the docstrings a bit more explicit.
combinatorics/permutations: Made method to calculate lcm a bit
less verbose. Also made the docstrings a bit more explicit.

Signed-off-by: Saptarshi Mandal <13ec3c7bab52575f3a0cda6406c76269cc13b041@gmail.com>

hargup/sympy,pandeyadarsh/sympy,MridulS/sympy,aktech/sympy,cccfran/sympy,dqnykamp/sympy,MechCoder/sympy,shipci/sympy,souravsingh/sympy,asm666/sympy,oliverlee/sympy,madan96/sympy,ahhda/sympy,MridulS/sympy,Curious72/sympy,wyom/sympy,Mitchkoens/sympy,jbbskinny/sympy,hargup/sympy,AkademieOlympia/sympy,mafiya69/sympy,kaushik94/sympy,hargup/sympy,kaushik94/sympy,rahuldan/sympy,lindsayad/sympy,abhiii5459/sympy,cswiercz/sympy,Designist/sympy,aktech/sympy,sahmed95/sympy,jerli/sympy,shipci/sympy,rahuldan/sympy,liangjiaxing/sympy,vipulroxx/sympy,Titan-C/sympy,lindsayad/sympy,souravsingh/sympy,iamutkarshtiwari/sympy,kmacinnis/sympy,kaichogami/sympy,abloomston/sympy,mafiya69/sympy,atsao72/sympy,jaimahajan1997/sympy,emon10005/sympy,VaibhavAgarwalVA/sympy,oliverlee/sympy,lindsayad/sympy,beni55/sympy,wanglongqi/sympy,jamesblunt/sympy,amitjamadagni/sympy,kmacinnis/sympy,sunny94/temp,oliverlee/sympy,madan96/sympy,pandeyadarsh/sympy,grevutiu-gabriel/sympy,postvakje/sympy,chaffra/sympy,vipulroxx/sympy,meghana1995/sympy,debugger22/sympy,grevutiu-gabriel/sympy,bukzor/sympy,moble/sympy,madan96/sympy,ChristinaZografou/sympy,skirpichev/omg,bukzor/sympy,sunny94/temp,skidzo/sympy,ga7g08/sympy,Mitchkoens/sympy,sahmed95/sympy,sampadsaha5/sympy,Arafatk/sympy,kevalds51/sympy,atsao72/sympy,Titan-C/sympy,debugger22/sympy,lidavidm/sympy,Sumith1896/sympy,yashsharan/sympy,shikil/sympy,iamutkarshtiwari/sympy,postvakje/sympy,Titan-C/sympy,beni55/sympy,liangjiaxing/sympy,AunShiLord/sympy,ChristinaZografou/sympy,pbrady/sympy,iamutkarshtiwari/sympy,garvitr/sympy,abloomston/sympy,Davidjohnwilson/sympy,Curious72/sympy,toolforger/sympy,AkademieOlympia/sympy,Gadal/sympy,shikil/sympy,Designist/sympy,atsao72/sympy,chaffra/sympy,aktech/sympy,kaichogami/sympy,skidzo/sympy,liangjiaxing/sympy,drufat/sympy,abloomston/sympy,mafiya69/sympy,AkademieOlympia/sympy,Arafatk/sympy,shikil/sympy,emon10005/sympy,mcdaniel67/sympy,Davidjohnwilson/sympy,wanglongqi/sympy,Sumith1896/sympy,wyom/sympy,yashsharan/sympy,Gadal/sympy,lidavidm/sympy,mcdaniel67/sympy,asm666/sympy,jerli/sympy,ahhda/sympy,ga7g08/sympy,wanglongqi/sympy,VaibhavAgarwalVA/sympy,atreyv/sympy,farhaanbukhsh/sympy,AunShiLord/sympy,MridulS/sympy,Arafatk/sympy,asm666/sympy,MechCoder/sympy,MechCoder/sympy,yashsharan/sympy,Shaswat27/sympy,shipci/sympy,kevalds51/sympy,jbbskinny/sympy,Curious72/sympy,grevutiu-gabriel/sympy,jaimahajan1997/sympy,kumarkrishna/sympy,amitjamadagni/sympy,skidzo/sympy,kevalds51/sympy,jamesblunt/sympy,Gadal/sympy,atreyv/sympy,garvitr/sympy,beni55/sympy,saurabhjn76/sympy,farhaanbukhsh/sympy,cswiercz/sympy,maniteja123/sympy,toolforger/sympy,sunny94/temp,yukoba/sympy,wyom/sympy,maniteja123/sympy,dqnykamp/sympy,abhiii5459/sympy,moble/sympy,pbrady/sympy,ChristinaZografou/sympy,ga7g08/sympy,saurabhjn76/sympy,garvitr/sympy,meghana1995/sympy,saurabhjn76/sympy,drufat/sympy,AunShiLord/sympy,pandeyadarsh/sympy,Vishluck/sympy,cswiercz/sympy,kmacinnis/sympy,Shaswat27/sympy,Mitchkoens/sympy,rahuldan/sympy,sahmed95/sympy,yukoba/sympy,sampadsaha5/sympy,Sumith1896/sympy,cccfran/sympy,lidavidm/sympy,debugger22/sympy,mcdaniel67/sympy,flacjacket/sympy,toolforger/sympy,kaichogami/sympy,jamesblunt/sympy,srjoglekar246/sympy,meghana1995/sympy,Designist/sympy,pbrady/sympy,Vishluck/sympy,jerli/sympy,kumarkrishna/sympy,ahhda/sympy,diofant/diofant,Davidjohnwilson/sympy,bukzor/sympy,drufat/sympy,maniteja123/sympy,hrashk/sympy,emon10005/sympy,chaffra/sympy,postvakje/sympy,sampadsaha5/sympy,atreyv/sympy,jaimahajan1997/sympy,hrashk/sympy,kaushik94/sympy,sahilshekhawat/sympy,souravsingh/sympy,jbbskinny/sympy,dqnykamp/sympy,moble/sympy,yukoba/sympy,cccfran/sympy,VaibhavAgarwalVA/sympy,abhiii5459/sympy,Shaswat27/sympy,sahilshekhawat/sympy,farhaanbukhsh/sympy,Vishluck/sympy,kumarkrishna/sympy,hrashk/sympy,vipulroxx/sympy,sahilshekhawat/sympy