The example(s) of anionic surfactants is/are

Represent the union of two sets by Venn diagram for each of the following.

$X=\{x | x$ is a prime number between $80$ and $100\}$

$Y=\{y | y$ is an odd number between $90$ and $100\}$

A cationic colloidal electrolyte forms micelle at ${10}^{-4}$ $\mathrm{M}$ concentration in water. If $1$ ${\mathrm{mm}}^3$ solution contains ${10}^{12}$ micelle structure, then the number of cations involved in one micelle are $\left({\mathrm{N}}_{\mathrm{A}}=6\times {10}^{23}\right)$,