AP BIOLOGY

HEREDITY

BASICS OF PROBABILITY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In a standard deck of 52 cards there are 13 diamonds and 13 hearts (red) and 13 spades and 13 clubs (black). Find the probability of choosing a card at random that is a spade OR a 7
A
1/52
B
1/13
C
4/13
D
17/52
Explanation: 

Detailed explanation-1: –There are 4 suits (Clubs, Hearts, Diamonds, and Spades) and there are 13 cards in each suit (Clubs/Spades are black, Hearts/Diamonds are red)-Without replacement means the card IS NOT put back into the deck. With replacement means the card IS put back into the deck.

Detailed explanation-2: -In a deck of cards, there are 6 red-faced cards. So, the probability of drawing a red-faced card is 6 out of 52 cards. Thus, the probability of drawing a red face card from a deck of cards is 6/52 = 3/26.

Detailed explanation-3: -What is the probability that the card is a heart? In an ordinary 52 card deck there are four suits: spades, hearts, diamonds and clubs. Each suite has 13 cards. Assuming the deck of cards is properly sorted, the probability that a card selected at random is a heart is 13 chances out of 52 cards, or 25%.

Detailed explanation-4: -Expert-Verified Answer In a standard deck of 52 playing cards, the probability of drawing a heart is 13/52 = 1/4. A standard deck of 52 playing cards consists of 4 suits, therefore, a total of 52/4 = 13 kinds in each suit.

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