a rectangular courtyard is 7m 35cm long and 4m 55cm wide. square tiles of same size are to be laid in the courtyard. find the side of the largest such tile that can be laid. also fine the number of tiles to be laid in the courtyard.

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.