Kent's Tents Has 7 Green Knapsacks and 3 Yellow Ones $$\begin{array} { r | l | l | l | l | } \hline x & 1 & 2 & 3 & 4 \\\hline P ( X = x ) & & & & \\\hline\end{array}$$

Essay

Kent's Tents has 7 green knapsacks and 3 yellow ones in stock. Curt selects 4 of them at random. Let X be the number of green knapsacks he selects. Fill in the probability distribution table. $$\begin{array} { r | l | l | l | l | } \hline x & 1 & 2 & 3 & 4 \\\hline P ( X = x ) & & & & \\\hline\end{array}$$ ​
Find $$P ( X \leq 2 )$$ . Round your answer to three decimal places. $$P ( X \leq 2 ) =$$ __________