1. In a survey of 100 investors in the stock market, 40 owned shares in EPU real estate, 50 owned shares in EJU banking, 40 owned shares in JNU telecommunication, 20 owned shares both in EPU and EJU, 15 owned shares both in EJU and JNU, 15 owned shares in both real estates in EPU and JNU, and 10 owned shares in all three. How many owned EPU and EJU shares? a.10 b.30. c.40
2. In a survey of 100 investors in the stock market, 40 owned shares in EPU real estate, 50 owned shares in EJU banking, 40 owned shares in JNU telecommunication, 20 owned shares both in EPU and EJU, 15 owned shares both in EJU and JNU, 15 owned shares in both real estates in EPU and JNU, and 10 owned shares in all three. How many owned just EJU shares? a.15 b.20 c.25
