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

[Q]: All Jovian planets have rings around their equators and at least _ moons.
[A]: eight

[Q]: Packs usually have fewer than _ wolves.
[A]: ten

[Q]: Dengue has an incubation period of _ to seven days after one is bitten by an infected mosquito.
[A]:
five