Problems on Loops -1

[Mohitmauryagit]

1. Print the series 1,2,3,4,5,6,7,8,9,10
2. 2,4,6,8,10
3. 1,3,5,7,9
4. 1,4,9,16,,,64,81,100
5. 2,6,12,20,,,,56,72,90
6. 1,-1,1,-1,1-1,1-1,,,
7. 1,-2,3,-4,5,-6,7,-8,9,-10
8. Print all this in reverse also.