Using only the symbols 3, A, B, C, D, N, write the following statements in set notation.O (a) None of the perfect squares are prime numbers. (b) All multiples of 10 are even numbers. (c) The number 3 is a prime number that is not even. (d) If you take all the prime numbers, all the even numbers, all the perfect squares, and all the multiples of 10, you still won't have all the natural numbers. 4. In a class of 40 students, everyone has either a pierced nose or a pierced ear. The professor asks everyone with a pierced nose to raise their hands Nine hands go up. Then the professor asked everyone with a pierced ear to likewise. This time there are 34 hands raised. How many students have piercings both on their ears and their noses