Jambmaths question:
Find the probability that a number picked at random from the set {43, 44, 45, - , -, -, 60} is a prime number
Option A:
$\tfrac{2}{9}$
Option B:
$\tfrac{7}{9}$
Option C:
$\tfrac{1}{3}$
Option D:
$\tfrac{2}{3}$
Jamb Maths Solution:
43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60
The prime numbers are 43, 47, 53, 59
Total number possible expected outcome =18
Number of Expected outcome is 4
Probability of a prime number =$\tfrac{4}{18}=\tfrac{2}{9}$
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