SET- 3

If the set A has 3 elements and the set B={3,4,5} ,then find the number of elements in (A xx B)

If sets A= (-3,2) and B= (-1, 5) then find the following sets :

If the cardinality of a set A is 4 and that of a set B is 3, then what is the cardinality of the set AUB?

How many arithmetic progressions with 10 terms are there whose first term is the set {1, 2, 3} and whose common difference is in the set {2, 3, 4} ?

10 is the mean of a set of 7 observations and 5 is the mean of a set of 3 observations, the mean of the combined set is

What is Cartesian product of 3 sets ?( explain with example)