Akhil has a board, similar to chessboard, except that it has only 6x6 squares. He calculated the number of rectangles (including squares) on the board.
How many distinct values can the area of these rectangles assume?
a) 72 b) 24 c) 36 d) 54 e)18
In a box there are 90 slips, numbered from 1 to 90. Ramu picks up four slips at random, one after the other, without replacement. What is the probability that the numbers on the slips, in the order he picks them up, are in ascending order?
a) 1/6 b) 1/12 c) 1/24 d) 2/45