Me ! 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% . 

20 percentage, you can also do it on a calculator.