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(1 - 1 * 1 / 10) * (1 - 1 * 1 / 9) * (1 - 1 * 1 / 8) * (1 - 1 * 1 / 7) * (1 - 1 * 1 / 6)
(1 - 1 * 1 / 10) * (1 - 1 * 1 / 9) * (1 - 1 * 1 / 8) * (1 - 1 * 1 / 7) * (1 - 1 * 1 / 6)
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