• # question_answer Direction: The bar graph shows the number of pupils in a class taking part in a mathematics competition over five years.                   What is the increase in the number of participants from 2009 to 2011? A)  4                     B)  1                     C)  3                     D)    0

No. of participants in 2009 = 6 No. of participants in 2011=10 $\therefore$ Increase in the no. of participants $=\text{1}0-\text{6}=\text{4}$