To display the pattern. (Qbasic Code)
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
- CLS
n = 1
FOR i = 1 TO 5
FOR j = 1 TO i
PRINT n;
n = n + 1
NEXT j
PRINT
NEXT i
END