Sets Test - 25...

If universal set $$\xi = \{a, b, c, d, e, f,  g, h\}, A = \{b, c, d, e, f\},  B =\{a, b, c, g, h\}$$ and $$C = \{c, d, e, f, g\}$$, then find $$B - A$$

If $$A = (6, 7, 8, 9), B = (4, 6, 8, 10)$$ and $$C = \{x : x \,\,\epsilon\,\,N : 2 < x \leq 7\}$$ ; find : $$B - B$$

Find the set of all solutions of the equation $$2^{\left | y \right |}-\left | 2^{y-1}-1 \right |=2^{y-1}+1$$, the solution includes

If $$Q=\{ x:x=\cfrac { 1 }{ y },$$ where $$ y\in N \} $$, then

$$\displaystyle A=\left\{ x:x\neq x \right\} $$ represents:

$$A=\left\{ x:x\neq x \right\} $$ represents-

Which of the following statements is false?

The solution set of $$x+2<9$$ over a set of positive even integers is 

The solution set of $$3 x - 4 < 8$$ over the set of non-negative square numbers is