Question

Grace's exercise programme requires that she does 1 sit-up on the first day, 2 sit-ups on the second day, 6 sit-ups on the third day, 15 sit-ups one the fourth days and so on until

she does at least 50 sit-ups each day. How many days must Grace exercise to reach her
target of 50 sit-ups per day?​

Answer 1

I think I’m wrong but it’s around 28 29days