Find the probability of at least three
successes in six trials of a binomial
experiment in which the probability of
success is 50%.

Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?

Can someone me with this problem i don't understand i need

Ineed i been stuck on this question since yesterday