Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.

Cognitive changes are probably equivalent to about a three to ____ month delay in progression.
six

Human gestation is divided into three trimesters of ____ months each.
three

Women have a longer life expectancy, outliving men by an average of ____ to eight years.
seven