Imagine we are throwing a five-sided die 50 times. on average out of these 50 throws how often would the five-sided die show an odd number

There are 3 odd numbers on the die: 1, 3, and 5. So on a given throw you have a 3/5 chance of getting an odd number. For 50 throws that's
50•(3/5)=30

Ithink if im not mistaking b is -3 but im not a 100% sude