Anumber line contains points q, r, s, and t. point q is on the coordinate 4, r is on the coordinate 8, s is on the coordinate 9, t is on the coordinate 12. find the probability that a point chosen at random on qt is on st. express your answer as a percent.

a) 25%
b) 37.5%
c) 44%
d) 51.5%

Consider a bag that contains 220 coins of which 6 are rare indian pennies. for the given pair of events a and b, complete parts (a) and (b) below. a: when one of the 220 coins is randomly selected, it is one of the 6 indian pennies. b: when another one of the 220 coins is randomly selected (with replacement), it is also one of the 6 indian pennies. a. determine whether events a and b are independent or dependent. b. find p(a and b), the probability that events a and b both occur.