manasi_sh Senior | Next Rank: 100 Posts View User Profile Posts: 69 Joined: Sat Sep 15, 2007 1:54 am prob by manasi_sh » Fri Oct 05, 2007 1:10 am If positive integer n<=3 and n is the number of times a coin is flipped, what is the value of n? (1)The probability of getting heads exactly once is 1/2 (2)The probability of getting at least one tail is greater than 1/2 Plz help n explain.. Top Quote