[求助]JJ mice climbing

hujin2001 · 发表于 2007-12-12 11:29:00

count the number of ways for a mice climbing from level 1 to level 5..Pict belowed
A, 16( maybe)
B. 25(maybe)
C 50
D 3^5
E 4^6
摎埬:16

o        level 1
                 /\        level 2
                /\/\       level 3
               /\/\/\      level 4
              /\/\/\/\     level5
the jj author's answer is 4^2=16. why it's 4^2? please advise. Thanks.

yuching730 · 发表于 2007-12-13 05:36:00

WUPA第八篇有解………

[求助]JJ mice climbing

[求助]JJ mice climbing

所属分类: GMAT考试

正在浏览此版块的会员 ()