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小學代數

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wongyan:

--- Quote from: hangchoi on 25 March 2012, 21:15:53 ---10C9 = 45 ??

--- End quote ---
10C2!!!!Two pupils shake hands at a time!!!

hangchoi:

--- Quote from: wongyan on 26 March 2012, 10:56:18 ---10C2!!!!Two pupils shake hands at a time!!!

--- End quote ---

Yes...make the conversion too quick.... ;D

oo8:

--- Quote from: hangchoi on 27 March 2012, 10:27:05 ---Yes...make the conversion too quick.... ;D

--- End quote ---

toooooo  primary school . . . that's why !!!  ;D

chanchiwai:

--- Quote from: oo8 on 27 March 2012, 14:08:13 ---toooooo  primary school . . . that's why !!!  ;D

--- End quote ---

are you sure they are really primary school level.....i have douobt.... :o :o :o

oo8:

--- Quote from: chanchiwai on 28 March 2012, 15:46:50 ---are you sure they are really primary school level.....i have douobt.... :o :o :o

--- End quote ---

We had this kind of Math question for 升中試！ >:(

But with 5 or 6 student instead of 10.

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