In the following figure, rectangle represents Opticians, circle represents Curators, triangle represents Campers and square represents Europeans. Which set of letters represents Opticians who are either Europeans or Campers?
The bar graph shows results of a survey carried out within a club. The members of the club were asked which soft drink they consumed? Study the diagram and answer the following questions.
What is the ratio of consumers of soft drink B to consumers of soft drink E?