Question

A box contains 20 balls 1,2,3,4---20. A ball is drawn at random. What is the probabiliry that the number of balls is divisible by 2 and 3

Answer 1

Simple Event={ 1,2,3,4,5,6,8,9,10,11,12,13,14,15,16,17,18,19,20}

A.T.O
NUMBER OF BALLS DIVISIBLE BY 2 AND 3
ARE,..
=> 2,3,4,6,8,9,10,12,14,15,16,18,20
Therefore,
No of possible Events are
13
therefore
P(number of balls divisible by 2 and 3)= 13/20