Guys, please help me!
Give an example of four different sets A, B,C and D such that (1) A ∪ B = {1, 2} and C ∩ D = {2, 3} and(2) if B and C are interchanged and ∪ and ∩ are interchanged, then we get the same result.
If the annual increase in the population be 20% and the present population be 10,000. What will be the population after 3 years hence?
a.16000
b.17280
c.14400
d.17820
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. Express your answer using only positive exponents. 
. Express your answer using only positive exponents. 
simplifies to 
