Question

a- If U = {1,2,3,……… 10} A = {1,3,5,7,9}

Then find A

c

and prove A ∩ A

c = ∅ and A ∪ A

c= U

b- If A = {1,2,3,4,5}, B = {2,4,6}

Find (i) A-B, (ii) B-A, ​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

using the value of 'a' and 'b' given we must replace 'a' and 'b' with the given value and solve

so here we need to solve =) ab-ba

so the value of 'a' is - land the value of 'b' is 2.

(-1×2)-(2×-1)

=2-2-(-2)

-2+2

0

: ab - ba =0 when 'a' = -1 and'b' = -2