Algebra

You have to answer 2 essay questions for an exam. There are 8 essays to choose from. How many different groups of 2 essays could you possibly choose?

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  1. Questions A, B, C, D, E, F, G, H

    AB, AC, AD, AE, AF, AG, AH
    BC, BD, BE, BF, BG, BH

    Take it from there.

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    Ms. Sue
  2. 8 choose 2=8!/6!2!=8x7/2=28
    ☺☺☺☺

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