Cricket player Dhoni's average in first 30 matches was 72 runs. After 31st match, his average raised as 73 runs. How many runs dis he make in 31st march?
In a T-20 cricket, Raju hit a "six" 10 times out of 50 balls he played. If a ball was selected at random. Find the probablity that he would not have hit a "six".