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.

Copper has ____ naturally occurring isotopes.
two

Cesarean section are three to ____ times more likely for pregnant women with diabetes.
four

Most resistors have ____ coloured bands close together at one end and one single band at the other.

three