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## Answers

*my fiend it is not right......................*

__it is not possible this question has been asked for many time__

my friend it could be of 4 bloks==15+5+7+3=30....my friend it could be of 4 bloks==15+5+7+3=30....

The nswer of this question is tricky and the answer is 3!+1+13+7+3=30