Madhya Pradesh Police Exam Model Paper 4

Question : 82 of 100

Marks: +1, -0

17 cards numbered 1 to 17 are put in a box and mix thoroughly. A person draws a card from the box. Find the probability that the number on the card is a prime number

$9 {/ }17$
$17 {/ }9$
$7 {/ }17$
$17 {/ }7$

Validate

Solution:

Given -
total number of cards = 17
Formula used -
probability = n(E)/n(S)
Solution -
Let the probability be p(E).
⇒ n(E) = prime number = {2, 3, 5, 7, 11, 13, 17}
⇒ n(S) = 17

⇒ p(E) = 7{/}17

∴ the probability be p(E) $= 7{/}17$

Go to Question:

Prev Question

Next Question