Question

let A and B the two sets such that n(A)=3 n(B)=2 if (x, 1), (y, 2),( 2, 1) are in A×B find A and B​

Answer 1

Answer:

a) Barium Chloride solution is mixed with copper sulphate solution

and a white precipitate is observede

b) On heating Copper powder in air in a china dish, the surface of

coppers powder turns black

c) On heating green coloured ferrous sulphate crystals, reddish brown

solid is left and a smell of gas having odour of burning sulphur is

experienced

d) Iron nails when let dipped in blue copper sulphate solution become

brownish in colour of copper sulphate fades away.

e) Quicklime vigorously with water releasing a large amount of heat.

Answer 2

According to the definition of Cartesian Product A*B the first element of each ordered pair would belong to A and second to B .
So A={x,y,2}
B={1,2}