Qualification > Math
S1 and S2 DOUBTS HERE!!!!
melony:
--- Quote ---You are most welcome .. You tooo
By the way How are you in Permutations and Combinations??
--- End quote ---
Not too bad, but most of the times i just get lucky, everyone, i mean EVERYONE in our class can do them but are always unsure of the answer being right, i guess it's the same with everyone else from what i've heard
Ghost Of Highbury:
--- Quote from: melony on May 25, 2011, 07:14:16 pm ---Not too bad, but most of the times i just get lucky, everyone, i mean EVERYONE in our class can do them but are always unsure of the answer being right, i guess it's the same with everyone else from what i've heard
--- End quote ---
True, very true. Always unsure of the answer..
*sighs* , let's just hope tomorrow's paper is easy.
SkyPilotage:
--- Quote from: melony on May 25, 2011, 07:14:16 pm ---Not too bad, but most of the times i just get lucky, everyone, i mean EVERYONE in our class can do them but are always unsure of the answer being right, i guess it's the same with everyone else from what i've heard
--- End quote ---
Well My problems are all In permutations and combinations as they started to get HArd from 2009-2010 :'(... I hope it comes easy tmrw... Best OF luck for all Of uss!! ;)
SkyPilotage:
June 2010 Variant 63 question 4 II)
Can some one plzzz explain the third way in the mark scheme???
melony:
Im not sure but this is how i understood it, this is the first time im looking at it
SO the first three colas are next to each other, [CCC]
lets just let that be one big C, green tea = G, oranje juice = J
there are only three different places we can place the G:
1) G C G J J 2) G C J G J 3) G C J J G
hence the 3
note that the Gs can not be moved the only thing we can move is C J J hence 3! = 4x3/2
therefore 3x3!=18 or as the mark sceme 3x(4x3/2)
hope i helped ;), good luck everyone im out for the night!
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