Question
A card is drawn from a standard deck of 52 cards. What
is the probability that it is a face card or a heart?Solution
ATQ, Face cards = 12 (J,Q,K of 4 suits) Hearts = 13 Overlap (face cards that are hearts) = J♥, Q♥, K♥ = 3 Favourable = 12 + 13 - 3 = 22 Probability = 22/52 = 11/26
A is younger than B by 4 years. If the ratio of A and B ages is 5:7 respectively, then find the age of A.
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