10 HOME : VTAB 8: PRINT "COMBINATIONS: N THINGS TAKEN R AT A TIME": INPUT " ENTER AS N,R ?";N,R: DIM C(N,R): FOR I = 0 TO N -1:C(I,0) = 1: FOR J = 0 TO R -2:C(I +1,J +1) = C(I,J) +C(I,J +1): NEXT :C(N,R) = C(N,R) +C(I,R -1): NEXT
20 PRINT : PRINT " COMBOS="C(N,R): PRINT "ALL ITEMS TO APPEAR "C(N -1,R -1)" TIMES": PRINT : PRINT TAB( 10)"-PRESS Q TO QUIT-";: GET A$: IF A$ < >"Q" THEN RUN