Three jars contain only almonds, only raisins, or a mixture. Their labels read Almonds, Raisins, and Mixed — and every label is wrong. From which jar should you take one snack to identify all three?
A little nudge?
Start with the label that rules out a mixture.
Ready for the answer?
Take a snack from the jar labeled Mixed.
That jar cannot be mixed. If you draw an almond, it is the almond jar. The jar labeled Raisins must then be mixed, because it cannot contain only raisins or the already identified almonds. The remaining jar holds raisins. Reverse the reasoning if you draw a raisin.