1. 6 people meet for a business lunch. Each person shakes hands once with each other person present. How many handshakes take place?
A. 30
B. 21
C. 18
D. 15
E. 10
2. In a sports club with 30 members, 17 play badminton and 19 play tennis and 2 do not play either. How many members play both badminton and tennis?
A. 7
B. 8
C. 9
D. 10
E. 11
3. Rectangle ABCD has a perimeter of 26. The half circle with diameter AD has an area of 8π. What is the perimeter of the part of the figure that is not shaded?
A. 26 + 4π
B. 18 + 8π
C. 18 + 4π
D. 14 + 4π
E. 14 + 2π