What are the subsets of the null set `O/` ? Does it possess a proper subset?

What are the subsets of {O/,{O/}} .

Write all subsets of { O/ }.

What' is the significance of null vector?

Let R be the relation defined in the set A={1,2,3,4,5,6,7,8,9} by R={(a,b,):" both a and b are either odd or even"} . Show that R is an equivalence relation. Further show that all the lements of the subset {1,3,5,7,9} are related to one another and all the lement of the subset {2,4,6,8} are related to one another but no element of the subset {1,3,5,7,9} is related to any element of the subset {2,4,6,8} .

State whether the following sets are null set or singleton set:the set of prime numbers divisible by 6

What does hilum of seed represent?

If A = {a, b, c} then name all subsets and all proper subsets of A.

D, E and F are three subsets of universal set U defined as follows : D={ x:x is a letter of the word 'Prose'} E={ x:x is a letter of the word 'Poetry'} F = { x : x is a letter of the word 'essay'} U= D uu E uu F prove D nn (E-D)= O/

If R = {2, 4, 6, 8} S = {3, 4, 6, 7} T = {1, 2, 3, 4} are three subsets of the Universal set U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} then prove S-T=S nn T'

D, E and F are three subsets of universal set U defined as follows : D={ x:x is a letter of the word 'Prose'} E={ x:x is a letter of the word 'Poetry'} F = { x : x is a letter of the word 'essay'} U= D uu E uu F Find (D-E)' uu F