To which (if any) of the sets N, Z, Q and R does -2/3 belong?

If set P x Q = {(x,1), (x,2), (x,3), (y,1), (y,2), (y,3),(z,1), (z,2), (z,3)}. What is set Q?

Which of the following sets of quantum numbers refers to a 2s orbital?Group of answer choicesn= 1, l = 2, ml = 2, ms = + ½n= 2, l = 1, ml = -1, ms = + ½n= 2, l = 2, ml = 0, ms = + ½n= 1, l = 2, ml = 1, ms = + ½n= 2, l = 0, ml = 0, ms = + ½

Determine whether the relation R defined on the set R of all real numbers as R = {(a, b) : a, b ∈ R and a – b + 3–√ ∈ S, where S is the set of all irrational numbers}, is reflexive, symmetric and transitive.

Let the set of integers be the Universal set and Z = {. ., -4 , -2, 0, 2, 4, . .}, then Z' will be:

The Universal Set = { x ∈Z | -4 ≤ x < 4} and A = {0}.What is the complement of A?Group of answer choices{-4, -3, -2, -1, 0, 1, 2, 3}{-3, -2, -1, 1, 2, 3}{-4, -3, -2, -1, 1, 2, 3}{-4, -3, -2, -1, 1, 2, 3, 4}