Question

The zip code of a location consists of five digits chosen from the set D shown below.
D = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}

The set M represents the digits in one of the zip codes for Miami.
M = {3, 3, 1, 9, 0}

The set C represents the digits in one of the zip codes for Cooper City.
C = {3, 3, 3, 3, 0}

How many prime numbers are in the set ~(M(Upside down U) C) ?

Answer 1

first you might want to answer: what is the set ~(M intersect C) ?, because I'm getting a much smaller amount than Luis...