Your list · 0 हिं

Probability · Question 64 of 70

Question 64

MediumOriginal question

A card is drawn at random from a well-shuffled pack of 52. What is the probability that it is a king or a heart?

\frac{4}{13}

Correct answerYour answer

\frac{17}{52}

Correct answerYour answer

\frac{8}{13}

Correct answerYour answer

\frac{9}{13}

Correct answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer A

Correct answer: A

Kings: 4; hearts: 13; the king of hearts is in both.
$4 + 13 - 1 = 16$ , so the probability is $\frac{16}{52} = \frac{4}{13}$ .

Worth noting

$\frac{17}{52}$ counts the king of hearts twice.

Concept: The addition rule with cards
Typical timeTypical: 90 s
Your timeYours: —

The rule this testsThe addition and complement rules

Practise this chapter →

Ten questions from Probability, at your own pace.

Practise this chapter →

Ten questions from Probability, at your own pace.

Practise this chapter All 70 questions in Probability Revise the notes for Probability