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An urn contains marbles of four colours : red, white, blue and green. When four marbles are drawn without replacement, the following events are equally likely : (1) the selection of four red marbles; (2) the selection of one white and three red marbles; (3) the selection of one white, one blue and two red marbles; (4) the selection of one marble of each colour. The smallest total number of marbles satisfying the given condition is |
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Answer» An urn contains marbles of four colours : red, white, blue and green. When four marbles are drawn without |
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