Determine the value of k?

Category: QuestionsDetermine the value of k?
Editor">Editor Staff asked 11 months ago

Determine the value of k?
(a) 1/8
(b) 1/4
(c) 1/6
(d) 1/2
I had been asked this question in an interview for internship.
I’m obligated to ask this question of Random Variables and its Probability Distributions in chapter Probability of Mathematics – Class 12
NCERT Solutions for Subject Clas 12 Math Select the correct answer from above options 
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1 Answers
Editor">Editor Staff answered 11 months ago

Correct option is (a) 1/8
Best explanation: We know that ∑P(xi)=1
P(X) = P(X=0) + P(X=1) + P(X=2) + P(X=3)
1 = 0 + 1/2 + 2k + 2k
1/2 = 4k
k = 1/8