Nela randomly selects a card from a standard deck of cards. what is the probability she selects a red queen? a. 1/2 b. 1/13 c.2/13 d. 1/26

This is the beginning of all probability problems.
Memorize it:

Probability =
       (number of ways to be successful)
divided by
       (total number of possibilities) .

When you draw one from a deck of cards, there are 52 total possibilities.

How many red queens are there ?

-- Queen of hearts
-- Queen of diamonds

There are two of them.

Probability of drawing one from the deck = 2 / 52  =  1/26  =  about  3.8% .