Re: Sample Questions of ISI ME I (Mathematics) 2010 Discussion

Posted by Amit Goyal on Apr 13, 2010; 2:37am
URL: http://discussion-forum.276.s1.nabble.com/Sample-Questions-of-ISI-ME-I-Mathematics-2010-Discussion-tp4850019p4893927.html

Next one:

Consider 5 boxes, each containing 6 balls labelled 1, 2, 3, 4, 5, 6. Suppose one ball is drawn from each of the boxes. Denote by b(i), the label of the ball drawn from the i-th box, i = 1, 2, 3, 4, 5. Then the number of ways in which the balls can be chosen such that b(1) < b(2) < b(3) < b(4) < b(5) is
(a) 1,
(b) 2,
(c) 5,
(d) 6.