Question

which of the following sets are finite or infinite sets a=[x/x e n]and [x-3][x-4 ]=0 ,
step by step solution Plzz it's urgent ​

Answer 1

Answer:

Q.. A = { X:X E N }

ans.. = A = { 1,2,3,4,5,...........} infinity

since, it is uncountable .

Q... { X:X E N and X-3 , X-4 }

ans.. = x-3 = 0 and X-4 = 0

= x= 3 and X = 4

it is finite because it is countable.

I hope it will help you.......