Can you give me a website to go on to go over how to know whether you double or half the number of chromosomes given in a scenario?

Thank you so much! I have a quiz tomorrow and I need all the help I could get!

Since I don't know what scenario you have, I can only let you know that body cells have a diploid number and mature sex cells (sperm and ova) have a haploid number. For humans that is 46 and 23, respectively.