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musiclover10045
There is 2 red fives in a deck ( Hearts and Diamonds) and 2 red fours, for a total of 4 possible cards.

This would give a probability of 4/52, which reduces to a 1/13 probability.
P(red 5) =  2/52 = 1/26
P(red 4)  =  1/26

P( red 4 OR red 5)  = 1/26 + 1/26  = 1/13 answer