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5 questions
3 5 −1 2 =3\ 5\ -1\ 2\ =3 5 −1 2 =
6 4 − 4 2 =6\ 4\ -\ 4\ 2\ =6 4 − 4 2 =
7 9 − 5 5 =7\ 9\ -\ 5\ 5\ =7 9 − 5 5 =
8 3 − 1 2 =8\ 3\ -\ 1\ 2\ =8 3 − 1 2 =
9 9 - 4 4 =
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