Is $w$ subset of $N$ or $Z$?

Find the cardinal number of $M=\left\{p,q,r,s,t,u\right\}$.

Find the cardinal number of the set, $P=\left\{x:x=3n+2, n\in W\right.$ and $\left.x<15\right\}$.

Find the cardinal number of the set, $Q=\left\{y:y=\frac{4}{3n}, n\in N and 2<n\le 5\right\}$. 

Find the cardinal number of the set, $R=\left\{x:x\right.$is an integer, $x\in Z$ and $\left.-5\le x<5\right\}$.

Find the cardinal number of $\mathrm{S}=$The set of all leap years between $1882$ and $1906$.

Identify the set as finite or infinite.

$X=$The set of all districts in Tamilnadu.

Identify the set as finite or infinite.

$\mathrm{Y}=$The set of all straight lines passing through a point.