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14. Lisa was both the 16th highest and 16th lowest in her mid term exam. How many students are in Lisa's class?

30 31 32 33

- 30
- 31
- 32
- 33

15. Jane has 4 pairs of blue earrings, 3 pairs of yellow earrings, 4 pairs of brown earrings, and 6 pairs of black earrings.

There is a power failure and she can't switch on the light. How many earrings is it necessary to pick, before she is certain to have a matching pair?

4 7 8 9

- 4
- 7
- 8
- 9