Question Text
Question 2 :
If  $D = \{q|(q-4)^2 = 0\}$ then the set $D$ is a 
Question 3 :
How many elements does following set contain?<br/>$F = \{y | y$ is a point of intersection of two parallel lines$\}$
Question 4 :
Is the set $H = \{t | t$ is a triangle having four sides$\}$ empty?
Question 7 :
State the following statement is True or False<br/>If $A= \{x |\sqrt{x} = 16\}$ , then the set $A$ is a singleton set.
Question 9 :
If $A=\left\{ 2,4\left\{ 5,6 \right\} ,8 \right\} $, then which one of the following statements is not correct?
