8 cards are numbered as 1, 2, 3, 4, 5, 6, 7, 8 respectively. They are kept in a box and mixed thoroughly. Once card is chosen at random. What is the probability of getting a number less than 4?
Total number cards kept in the box = 8
Number of cards having a number less than 4 on it = 3
Probability P() = 
Probability of selecting a card with a number less than 4 P(No. less than 4)
= 
= 
2