Answer 1

Lets go through both loops:
First Loop:
You initialize i with 7 -> i+2 = 9 -> i is printed(9) -> i is incremented, which means i is now 10 -> condition is valid, loop goes on -> i+2 = 12 -> i is printed(12) -> i is incremented again, now it is 13 -> condition is false, loop in terminated.
Notice here that i is 13, as it is in second loop!
You just dont see it anymore because the print-statement usually happens after the incrementation!
You can see this by yourself by adding a last print-statement after the loop like in example two.
Okay, now for the second loop:
You initialize i with 1 again -> i+2 = 3 -> increment, i = 4 -> i+2 = 6 -> increment, i = 7 -> i+2 = 9 -> increment, i = 10 -> condition is still valid since i == 10, so loop goes on -> i+2 = 12 -> increment, i = 13 -> condition is checked, now it is false -> loop is terminated.
And now you print i, which is obviously 13 now.
To summarize:
Both i's were equal to 13 in the end, the different output is simply caused by when you print the i.