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Lazy Liz doesn't like absolute values notation, and often drops them from her equations. She always writes
∣a−b∣=a−b. |a-b| = a-b. ∣a−b∣=a−b.
How many of the 11×11 11 \times 11 11×11 ordered pairs of integers (a,b) (a, b) (a,b), each of which are between 0 and 10 inclusive, are there, such that
∣a−b∣=a−b? |a-b| = a-b? ∣a−b∣=a−b?
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