Provide a written description of the complement of the given event

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When four digits (between 0 and 9 inclusive) are randomly selected for replacement for a lottery ticket, non of the digits is a 7

May 28th, 2015

There are 10 digits. Each digit has a probability of 1/10 of being chosen.

P(none 7) = 1 - P(none of the 4 choices is zero)

= 1 - (9/10)^4 = 0.3439

May 28th, 2015

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May 28th, 2015
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May 28th, 2015
Jun 22nd, 2017
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