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Funny Opration

jinjing 2010-04-15 08:32:23 ( reads)

80% ZT:
If N=987605,then A=9+8+7+6+0+5=39, B=3+9=12 and C=1+2=3,D=3,....
Question: N=2010!, Find C.

跟帖(6)

twfx

2010-04-15 11:18:57

9

twfx

2010-04-15 11:22:12

步骤2. 改为<99

jinjing

2010-04-15 11:32:58

Don't change,as 9+9=18

jinjing

2010-04-15 11:55:49

Great.

jinjing

2010-04-15 15:57:52

2)change 100 to 45.

wxczcbm

2010-04-15 20:36:00

回复：9