A bag contains 50 tickets numbered 1,2,3.....50 of which 5 cards,
are drawn at random and arranged in ascending order of the
number appearing on the tickets. Find the probability that the third
number is 30.
For third number to be 30, two numbers need to be selected from 1,2,3,.....,29 and two numbers from 31,32,33,......,50.
Required prob.=[C(29,2)xC(20,2)]/C(50,5)
46/50
srinaths explanation perfect