BINOMCDF on calculator question

I understand the X is 1-5 but I don't understand what to put in the lowerbound and upperbound of the calculator for

BinomCDF(5,0.5,?,?)

BINOMCDF on calculator question I understand the X is 15 but I dont understand what to put in the lowerbound and upperbound of the calculator for BinomCDF505 class=