Question

can someone help with probability

Answer 1

\[\left(\begin{matrix}52 \\ 6\end{matrix}\right)\]

Total combination of cards.

52/4 is the number of cards that are spades
= 13 cards are spades

Thus the number of ways to pick 2 cards from 13 is

\[\left(\begin{matrix}13 \\ 2\end{matrix}\right)\]

you need to pick 4 cards from the remaining 39 cards that are not spades so,

\[\left(\begin{matrix}39 \\ 4\end{matrix}\right)\]

Answer 2

Pretty sure this is correct.

Answer 3

If you are unfamilure with this notation it is combination, not permutation