Hello, Deadstar!

There are possible hands.Find the probability that a bridge hand (13 cards) is void inat leastone suit

Void in one suit

There are 4 choices for the voided suit.

We must choose 13 cards from the other 39 cards.

. . There are ways.

Hence, there are: . ways to be void in one suit.

Void in two suits.

There are choices for the two suits.

We must choose 13 cards from the other 26 cards.

. . There are ways.

Hence, there are: . ways to be void in two suits.

Void in three suits.

There are choices for the three suits.

We must choose 13 cards from the other 13 cards.

. . There is ways.

Hence, there are: . ways to be void in three suits.