JEE Main & Advanced
Mathematics
Probability
Question Bank
Definition of probability
question_answer
Suppose that a die (with faces marked 1 to 6) is loaded in such a manner that for K = 1, 2, 3?., 6, the probability of the face marked K turning up when die is tossed is proportional to K. The probability of the event that the outcome of a toss of the die will be an even number is equal to [AMU 2000]
A) \[\frac{1}{2}\]
B) \[\frac{4}{7}\]
C) \[\frac{2}{5}\]
D) \[\frac{1}{21}\]
Correct Answer:
A
Solution :
Required probability \[=\frac{3}{6}=\frac{1}{2}\].