row = 1

while row <= 9:
    col = 1
    while col <= row:
        print("%d * %d = %d" % (col, row, row*col), end="\t\t")
        col += 1

    print("")
    row += 1

---

for row in range(1, 10):
    for col in range(1, row+1):
        print("{} * {} = {}".format(col, row, row*col), end="\t\t")
    print("")

---

row = 1

while row <= 9:
    col = 1
    while col <= row:
        print("{} * {} = {}" .format (col, row, row*col), end="\t\t")
        col += 1

    print("")
    row += 1

---

for row in range(1, 10):
    for col in range(1, row+1):
        print("%d * %d = %d"% (col, row, row*col), end="\t\t")
    print("")

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