Find the cardinal number of the following set.

$A=\left\{x:3x+9\le 10, x\in \mathbf{W}\right\}$

Find the cardinal number of the following sets

$B=\left\{\mathrm{perfect} \mathrm{cube} \mathrm{numbers} \mathrm{less} \mathrm{than} 50\right\}$

If $\mathrm{U}=\left\{\mathrm{multiples} \mathrm{of} 5 \mathrm{less} \mathrm{than} 50\right\}$ and $\mathrm{A}=\left\{\mathrm{multiples} \mathrm{of} 5 \mathrm{divisible} \mathrm{by} 3\right\}$ , then find $A\text{'}$.

If $U=\left\{\mathrm{multiples} \mathrm{of} 5 \mathrm{less} \mathrm{than} 50\right\}$ and $A=\left\{\mathrm{multiples} \mathrm{of} 5 \mathrm{divisible} \mathrm{by} 3\right\}$ , then find $n \left(A\text{'}\right)$.

Also, verify $n\left(A\right) +n\left(A\text{'}\right) =n\left\{U\right\}$.

Given, $U=\left\{ x:x \in \mathrm{W} \mathrm{and} x<15\right\}$ find $A=\left\{x:x=2p-1, p\in \mathbf{N}\right\}$.

Given, $\mathrm{U}=\left\{\mathrm{x}:\mathrm{x} \in \mathrm{W} \mathrm{and} \mathrm{x}<15\right\}$, find $\mathrm{B}=\left\{\mathrm{x}:\mathrm{x}=5\mathrm{y}+2, \mathrm{y}\in \mathbf{W}\mathbf{ }\mathrm{and} \mathrm{y}\le 2\right\}$.

If the Universal set $U=\left\{0, 1, 2, 3, 4, 5, 6, 7, 8, 9\right\}$, then illustrate the following sets on Venn diagrams. 

$A=\left\{2, 3, 5, 7\right\} \mathrm{and} B=\left\{1, 2, 3, 6, 8, 9\right\}$

If the Universal set $\mathrm{U}=\left\{0, 1, 2, 3, 4, 5, 6, 7, 8, 9\right\}$, then illustrate the following sets on venn diagrams.

$A=\left\{2, 3, 5, 7\right\} and B=\left\{4, 5, 8, 7\right\}$

If the Universal set $U=\left\{0, 1, 2, 3, 4, 5, 6, 7, 8, 9\right\}$, then illustrate the following sets on Venn diagram. 

$A=\left\{3, 4, 5, 6, 7, 8\right\} \mathrm{and} B=\left\{3, 6, 7\right\}$