Question

In Exercises 19–22, express each set in set-builder notation.

19.
Set A is the set of natural numbers between 52 and 100.
A = {n |52 < n <100} means the same as the statement above A is a set such that the set of natural numbers, n, is between 52 and 100.

20.
Set B is the set of natural numbers greater than 42.
B= {X l X>42 n X e N} where e means "element of"

22.
Set D is the set of natural numbers between 27 and 51, inclusive.
The natural numbers are the counting numbers starting at 1 onward to infinity.
D = [the counting numbers from 27 to 51, inclusive}

Answer 1

1more? this loks more like 3 :)

Answer 2

depending on how finicky they want to be; you might need to include
\[n \in N\]

Answer 3

well i only needed to do just the number 20 but i did all so if u can tell me if the number 20 is good

Answer 4

im not sure how the grader would approve, but my notion would be similar, just written differently\[B= \{n \in N\ |\ n>42\} \]

Answer 5

http://www.mathsisfun.com/sets/set-builder-notation.html

there is an example of this here

Answer 6

ok