Question

A = {x: XEN, IS i = 57 B= {2,5,6,9} = {1,4,5 8, 9, 10] Find the number of elements of A​

Answer 1

Answer:

question is wrong..

x... natural numbers =A

B=(2,5,6,9)

C{1,4,5,8,9,10}

so the element of A is natural numbers