The point (3, 2) undergoes the following three transformations in the order given
(i) Reflection about the line y = x.
(ii) Translation by the distance 1 unit in the positive direction of x-axis.
(iii) Rotation by an angle about the origin in anti-clockwise direction.
Then, the final position of the point is
(- 2, 3)
(0, 3)
Suppose X follows a binomial distribution with parameters n and p, where 0 < p < 1. If is independent of n for every r, then p is equal to
In an entrance test there are multiple choice questions. There are four possible answers to each question, of which one is correct. The probability that a student know the answer to a question is 9/10. If he gets the correct answer to a question, then the probability that he was guessing is
B.
There are four machines and it is known that exactly two of them are faulty. They are teste done by one, in a random order till both the faulty machines are identified. Then, the probability that only two tests are need is
If pth, qth, rth terms of a geometric progression are the positive numbers a, b and c respectively,then the angle· between the vectors (log(a))2i + (log(b))2j + (log(c))2k and (q - r)i + (r - p)j + (p - q)k is