The position vectors of P and Q are respectively. If R is a point on PQ such that , then the position vector of R is
Let S be the sample space of the random experiment of throwing simultaneously two unbiased dice with six faces (numbered1 to 6) and let Ek = {(a, b) ∈ S : ab = k} for k 1. If pk + P(Ek) for k 1, then the correct among the following, is
For k = 1, 2, 3 the box Bk contains k red balls and (k + 1) white balls. Let P(B1) = , P(B2) = and P(B3) = . A box is selected at 36 random and a ball is drawn from it. If a redball is drawn, then the probability that it has come from box B, is
X = x | - 2 | - 1 | 0 | 1 | 2 | 3 |
P(X = x) | 1/10 | k | 1/5 | 2k | 3/10 | k |
A.
X = x | - 2 | - 1 | 0 | 1 | 2 | 3 |
P(X = x) | 1/10 | k | 1/5 | 2k | 3/10 | k |
As we know, total probability distribution is 1.