1.The set A={x:x∈R, x2=16 and 2x=6}A = \{x : x \in \mathbb{R},\, x^2 = 16 \text{ and } 2x = 6\}A={x:x∈R,x2=16 and 2x=6} is —a.null setb.singleton setc.infinite setd.not a well-defined collectionLogin to continueOnly logged in users canattempt or see the solution.