Posted by kylie on Wednesday, October 7, 2009 at 8:47pm.
The solution seems to follow this pattern.
2 x 5 = 10
10 -5 = 5
5 x 5 = 25
25- 5 = 20
20 x 5= 100
Basically first number times 5, next minus 5, the next again times 5, the one after minus 5 Etc.
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