25 divided by something = 3 remainder 4

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236

Sam is picking fruit from a basket that contains many different kinds of fruit. which set of events is independent?