What will be the java program to print this pattern

Question

output:
1
3*2
4*5*6
10*9*8*7
11*12*13*14*15

Answer 1

Try to do your own homework first then ask if you have any problems in the code please. btw post the code here.

Answer 2

maximum I have tried but I didn't get answer,this is one of the placement paper question