`a=[1,1,2,3,3,5,5,8]` what is set(a)​

If A ={1,2,3,4} and U={1,2,3,4,5,6,7,8} is universal set, then write the complement of set A .

If A={1, 3, 5, 7}, then what is the cardinality of the power set P(A)?

If A = (1, 3, 5, 7), then what is the cardinality of the power set P(A)?

A set of data is as under: 4, 2, 3, 2, 7, 4, 8, 5, 2, 4, 5, 6, 2, 5, 6, 6, 5, 4, 6, 5, 3, 5, 4, 3 What is the mode of the set?

If ={1,2,3},B={2,4,5,6}andC={1,3,5,7}, then U={1,2,3,4,5,6,7} can be taken as the universal set.

If |{:(8,-5,1),(5,x,1),(6,3,1):}|=2 then what is the value of x ?

If |(8,-5,1),(5,x,1),(6,3,1)| = 2 , then what is the value of x ?