Funny Question From Physic Tuition

Today we learned about the Kinetic Theory Of Gases , and there was a funny question in this chapter when we gone through it ..

Question : What is the difference of Square Mean Speed and Mean Square Speed ?

Some funny answers we get it from friendz , I know I know , Square Mean Speed is SMS whereas Mean Square Speed is MSS !!

Well the actual answer was Square Of the Mean Speed < (C)² > , and other one is Mean Of the Square Speed < (C²) >

Then Gary was asking me this one , what is the difference of Yew Soon Keat , Soon Keat Yew , Yew Keat Soon and Keat Soon Yew?

So this is my solution while solving his question :

Let,
Yew Soon Keat = YSK
Soon Keat Yew = SKY
Yew Keat Soon = YKS
Keat Soon Yew = KSY

Equation was formed whereby ,
Yew Soon Keat + Soon Keat Yew + Yew Keat Soon + Keat Soon Yew = SK

To prove this so ,
Let YSK + SKY + YKS + KSY = 0
Y(SK + SK + KS + KS ) = 0
Y ( 2SK + 2KS ) = 0

After eliminating the Y so it became
( 2SK + 2KS ) = 0
2SK = - 2KS
2SK = (-)(-2SK) by vector method
2SK = + 2SK

Therefore , SK = SK

Nothing to say edi leh Gary !! haha ...

And this one was also a bit confused " An equation which is dimensionally consistence maybe is a correct equation , but an equation which is not dimensionally consistense definately is not a correct equation " ... !!

Well it was easy to get confused if we did not understand it , so as a conclusion : We need to Study smart and not study hard ^^

So , Hope you all enjoy with what i posted today yea !!