Question

1.If m={prime number from 5—30}. Write out all the subjects of m

2. Given that k={even number from 1–10}. Find n(k)

Answer 1

1. The subjects of $m$  are $\{5, 7, 11, 13, 17, 19, 23, 29\}$ .

2.  By its definition, $k = \{2, 4, 6, 8, 10\}$ . Thus the number of subjects of $k$ , $n(k) = 5$ .