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

Q: Cigarette smokers have up to a _ times higher incidence of bladder cancer than non-smokers.

A: four
****
Q: Lions stand between _ and a half and four feet tall at the shoulder.

A: three
****
Q: Most insects have _ pairs of legs, one pair on each segment of the thorax.

A:
three
****