In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
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Question: Ticks mature in _ stages, moving from egg to larva and nymph to adult.

Answer: four


Question: Optical isomers differ in the arrangement of _ groups around a chiral carbon.

Answer: four


Question: All dogs are animals, and no cats are dogs, therefore _ cats are animals.

Answer:
no