In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

[EX Q]: Diarrhea is an illness that kills _ and one-half million children per year.
[EX A]: three

[EX Q]: Notebooks are laptop computers that weigh between five and _ pounds.
[EX A]: seven

[EX Q]: Reptiles also have scaly skin and a _ chambered heart.
[EX A]:
three