1) use the method seek n! 2!+4!+5! Value. Are recursive and non recursive method seeking n!. 2) seek written three sides of the triangle area under way. With this method, to calculate an area of ​ ​ two triangles. (1) three sides are: 3,4,5 (2) three edges, respectively: 5.3, 6.2, 83) from the command line parameters for two integers, find two integers all prime numbers between each line the number of output 3.

a.java

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