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

[EX Q]: Imago is a group of _ young musicians whose love for music is full of passion.
[EX A]: four

[EX Q]: Infinity divided by _ is infinity.
[EX A]: two

[EX Q]: All animals carry _ copies of each gene.
[EX A]:
two