Question

A card is drawn from a well shuffled deck of 52 cards. Find the probability that the card is a red card or a 2.

Answer 1

$|\Omega|=52$

There are 26 red cards and four 2's. But two 2's are red, so $|A|=26+4-2=28$

$P(A)=\dfrac{28}{52}=\dfrac{7}{13}\approx54\%$