What percent of cars are blue in color?
18%
21%
15%
27%
Total number of cars = 19
Number of blue cars =4
Percentage of blue cars = 419×100
= 21% (approx)
In a box containing 18 balls of 3 different colours red, green and blue, if 10 are red and 4 are green, then what is the probability of getting a blue ball in the first attempt?