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

Q: Screws provide at least _ times the holding power of nails.

A: seven
****
Q: Sexual maturity is achieved by the age of _ months.

A: three
****
Q: Adult birds moult at least once a year, although many moult twice and a few _ times each year.

A:
three
****