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    Help with probability problems in History of Math?

    1. A game is devised in which a single die is thrown. A gambler agrees to pay out in dollars the amount shown on the die if the number is odd, and to collect the amount shown on the die if the number is even. What is his mathematical expectation? 2. Prove that the probability of obtaining at...
  2. I

    Prove that if N is a normal subgroup of G and a E G, then order(Na) divides order(a)?

    o(Na) denotes the order of Na as an element of G/N.
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