In an attempt to determine some off-the-job factors that might be indicators of on-the-job effectiveness, a company made a study of 200 of its employees. It was interested in whether the employees had been recognized for superior work by their supervisors within the past year, whether they were involved in community activities, and whether they followed a regular exercise plan. The company found the following.

30 answered "yes" to all three

50 were recognized and they exercised

52 were recognized and were involved in the community

77 were recognized

37 were involved in the community but did not exercise

95 were recognized or were involved in the community

95 answered "no" to all three

(a) Draw a Venn diagram that represents this information.

(b) How many exercised only?

(c) How many exercised or were involved in the community?