Each program has one mistake. Tap the line where the mistake is, then choose the change to that line that makes the program work.
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Step 1: tap the line where the mistake is.
grid = [[1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12]]
total = 0
for col in range(0, 3):
total = total + grid[1][col]
print(total)
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