Changes

=Additional Information=

=Additional Information=

==Useful websites==

==Useful websites==

#mathsisfun[http://www.mathsisfun.com/combinatorics/combinations-permutations.html Permutation and combination]

#[http://www.mathsisfun.com/combinatorics/combinations-permutations.html Permutation and combination mathsisfun]

#themathpage[http://www.themathpage.com/aprecalc/permutations-combinations.html Permutation and combination]

#[http://www.themathpage.com/aprecalc/permutations-combinations.html Permutation and combination themathpage]

'''Useful video from khan academy and youtube'''<br>

'''Useful video from khan academy and youtube'''<br>

{{#ev:youtube|oQpKtm5TtxU| 150| }}

{{#ev:youtube|XqQTXW7XfYA| 150| }}

{{#ev:youtube|v9NLtiVt3XY| 150| }}

 

{{#ev:youtube|oQpKtm5TtxU| 150| left}}

{{#ev:youtube|XqQTXW7XfYA| 150| left}}

{{#ev:youtube|v9NLtiVt3XY| 150| left}}

 

 

If you want to make the video appear as thumbnail, then syntax is: {{#ev:youtube| o3gN9wI_w64| 150| left}}

==Reference Books==

==Reference Books==