1) Which is less? a) 15 b) 13 2) Which is less? a) 16 b) 14 3) Which is less? a) 16 b) 15 4) Which is less? a) 18 b) 17 5) Which is less? a) 17 b) 19 6) Which is less? a) 14 b) 13 7) Which is less? a) 19 b) 20 8) Which is less? a) 12 b) 11 9) Which is less? a) 15 b) 14 10) Which is less? a) 13 b) 18

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