Answers

2014-09-03T22:37:24+08:00
Figure number (x)     : 1: 2 : 3 : 4 : 5 : 
Number of blocks (y): 1 : 4: 7 : 10 : 5

As you can see there's a certain pattern in the following numbers...
the no. of blocks just keeps on adding 3... 
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