1) Which is the correct sign? a) b) 2) Which is the correct sign? a) b) 3) Which is the correct sign? a) b) 4) Which is the correct sign? a) b) 5) Which is the correct sign? a) b) 6) Which is the correct sign? a) b) 7) Which is the correct sign? a) b) 8) Which is the correct sign? a) b) 9) Which is the correct sign? a) b) 10) Which is the correct sign? a) b) 11) Which is the correct sign? a) b) 12) Which is the correct sign? a) b) 13) Which is the correct sign? a) b) 14) Which is the correct sign? a) b) 15) Which is the correct sign? a) b)

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