Question

find all the subset of set A={0,1}
B={3,6,9}​

Answer 1

Step-by-step explanation:

,A

2

,...,A

30

are thirty sets each having 5 elements and B

1

,B

2

,...,B

n

are n sets each with 3 elements, let

i=1

⋃

30

A

i

=

i=1

⋃

n

Bj=S and each element of S belongs to exactly 10 of the A

i

′

s and exactly 9 of the B,

′

s. Then n is equal to

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If A={2,3,5,7,11} and B=ϕ, find

A∪B