1) Which number is missing? a) 8 b) 10 c) 4 d) 3 2) Which number is missing? a) 6 b) 7 c) 8 d) 5 3) Which number is missing? a) 2 b) 9 c) 10 d) 7 4) Which number is missing? a) 7 b) 8 c) 9 d) 10

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