Statistics and Probability: JEE Main 2026 Mathematics question

If a random variable $x$ has the probability distribution [Table — $x$: 0, 1, 2, 3, 4, 5, 6, 7; $\mathrm{P}(x)$: $0$, $2k$, $k$, $3k$, $2k^2$, $2k$, $k^2+k$, $7k^2$] then $\mathrm{P}(3<x\le 6)$ is equal to