1. A relation in a set A is a subset of
2. A matrix is said to be a column matrix, if it has only
5. The total revenue in ₹ received from the sale of x units of a product is given by below equation. The marginal revenue when x=15 , is
6. The angle Between the lines Through the points ( 4,7,8 ), ( 2,3,4 ) and ( -1,-2,1 ), ( 1,2,5 ) is
8. The function given below, x∈(-a, a) is the solution of the differential equation
9. Three cards drawn successively, without replacement from a pack of 52 well shuffled cards, then the probability that first two cards are kings and the third card drawn is an ace, is
10. Suppose that the reliability of a HIV test is specified as follows Of people having HIV, 90% of the test detect the disease but 10% go undetected. Of people free of HIV, 99% of the test are judged HIV-ive but 1% are diagnosed as showing HIV+ive. From a large population of which only 0.1% have HIV, one person is selected at random, given the HIV test, and the pathologist reports him/her as HIV+ive. Then the probability that the person actually has HIV is