You are in your state's high school tennis championship tournament. at a the start of the event there are 128 participants, and each round eliminates half of the players. how many remain after round 3

I believe your answer would be 16. Your starting number is 128 then divide that by two because you are loosing half the participants. Should have 64 after your first round of participants left then divide that by two to get your second round of participants left coming out to be 32 then half of that again for your third round answer to be 16. Hope this helps!