Question

If A = {1,2} and B = {3,4} , write all the relations from A to B.

Answer 1

No of relation = 2^(a*b) = 2^4 = 16

Answer 2

u should have 16 relations!

Answer 3

Just find them

Answer 4

i know that but am only getting 14 relations.

Answer 5

u included \[\phi \]

Answer 6

yea i did

Answer 7

just show ur work we will find out where u missed

Answer 8

okay ..

Answer 9

A = {1, 2} and B = {3, 4}

∴A × B = {(1, 3), (1, 4), (2, 3), (2, 4)}

⇒ n(A × B) = 4

We know that if C is a set with n(C) = m, then n[P(C)] = 2m.

Therefore, the set A × B has 24 = 16 subsets. These are

Φ, {(1, 3)}, {(1, 4)}, {(2, 3)}, {(2, 4)}, {(1, 3), (1, 4)}, {(1, 3), (2, 3)},

{(1, 3), (2, 4)}, {(1, 4), (2, 3)}, {(1, 4), (2, 4)}, {(2, 3), (2, 4)},

{(1, 3), (1, 4), (2, 3)}, {(1, 3), (1, 4), (2, 4)}, {(1, 3), (2, 3), (2, 4)},

{(1, 4), (2, 3), (2, 4)}, {(1, 3), (1, 4), (2, 3), (2, 4)}

Answer 10

okay yu finishd b4 me .. :P

Answer 11

Did u understand!

Answer 12

yea .. am checking where i went wrong

Answer 13

u probably should have missed something

Answer 14

yea

Answer 15

{(1, 3), (2, 3)},{(1, 3), (2, 4)} i missedd those .. tnx for the help :)

Answer 16

welcome....))