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Total 64 questions
A discrete random variable can only take the values 2,3,4 or 5. The probabilities associated with some of the outcomes are: P(X=2) = 0.2, P(X=3) = 0.3, P(X=5) = 0.1.
For a randomly drawn value of X, calculate P(X>3).
Answer : C
One of the two solutions to the equation is .
Determine the second solution.
Answer : C
The particular solution of the second-order difference equation
yn+2 - 6yn+1 + 8yn = 0 n 2
subject to the initial conditions y0 = 3 and y1 = 2may be written in the form
yn = A(2n) + B(4n) n 0.
Determine the values of (A, B).
Answer : D
Determine the coefficient of x3in the binomial expansion of (2 + x)5.
Answer : B
Three light bulbs are chosen at random from 15 bulbs of which 5 are known to be defective.
Calculate the probability that exactly one of the three is defective.
Answer : C