Question

L x:x is a letter in
Rewrite the following sets by (1) deseribing method and (in) set builder method.
A = (Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday}
(b)
B = {1, 2, 3, 4, 5)
(e) W = {0, 1, 2, 3, 4, 5, 6}
(d)
V = {a, e, i, o, u}
(e) C= {b, c, d, f, g}
D = {5, 10, 15, 20, 25}
S = {1, 4, 9, 16, 25, 36}
T= {1, 8, 27, 64, 125}
(i) M = {mm, cm, m, km)
P = {2, 3, 4, 5)
2

Answer 1

Answer:

(i) X= { Sunday, Monday, Tuesday, Wednesday, Thursday, Friday , Saturday} 

The set X contains all the days of a week.

Hence in set builder form, we write

X= { x:x is a day in a week }

(ii) A={1,21,31,41,51,...}. The denominators of the elements are 1,2,3,4,...

∴ The set-builder form is A={x:x=n1,n∈N}