1.One group of number stands for one color.One number stands

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1.One group of number stands for one color.One number stands for one letter.Can you crack the code(破译密码) and write out the color?
A.1 2 3 3 4 5 _____
B.6 7 2 2 8 _____
C.7 2 10 _____
D.11 7 4 5 8 _____
E.4 7 9 8 6 2 _____
9.1+2+3+4+…….+2007=
10.1/4,1/16,1/36,1/64,1/100,( )
11.2,2,3,6,15,( )
12.15,25,35,45….What is the 100th number?______________
还有 9.10.11.12

1 A:YELLOW B:GREEN C:RED D:BROWN E:ORANGE
9.1+2+3+4+…….+2007=(1+2007)*1003+1004=2008*1003+1004=2015028
10.分母的规律是：4=4*1^2,16=4*2^2,36=4*3^2,64=4*4^2,100=4*5^2
那么,下一个就是4*6^2=144
所以： 1/4, 1/16, 1/36, 1/64, 1/100, (1/144)
11.后一个数除以前一个数的值依次是1 1.5 2 2.5 那么下一个商应该是3了,就用15乘3得45了.
所以：2, 2, 3, 6, 15, ( 45 )
12.由等差数列公式an=a1+n*d=15+100*10=1015
所以,The 100th number is 1015

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