3 which reduces to a 2 b 13 solving the two equations

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Unformatted text preview: s six cards numbered 1 – 6. Cards are drawn at random with replacement until the lowest numbered card (initially a one) gets drawn, then that card is thrown away and the drawings begin anew (so after getting the one, we discard it and begin drawing again with replacement until we get the two and then we discard the two, etc.). This continues until all six cards have been drawn. Let X denote the number of drawings needed to get all the cards. E(X) = 21 (Answer sh...
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