Answer to Question #157860 in Discrete Mathematics for Todd

Question

Writing set into a form of {x | P(x) }

1. {2,4,6,8,10}

2. {a,e,i,o,u}

3. {1,8,27,64,125}

4. {-2,-1,0,1,2}

If A = {3,7,12} Find:

5. |A|

6. P(A)

7. | P(A) |

Answer 1

(1) $\{2x:0<x<6,x\in \N\}$

(2) $\{x:x \text{ is an English vowel alphabeth}\}$

(3) $\{x^3:1\leq x\leq 5,x\in \Z\}$

(4) $\{x:-3<x<3,x \in \Z\}$

(5) 3

(6) $\{\phi,\{3\},\{7\},\{12\},\{3,7\},\{3,12\},\{7,12\},A\}$

(7) 8