Question 291632
The access code for a garage door consists of three digits. Each digit can be 2 through 8 and each digit can be repeated.
1) The number of possible access codes is?
2 thru 8 --> 7 possibilities
{{{7^3 = 343}}}
343 possible codes
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2) The probability of randomly selecting the correct access code is (rounded to the nearest thousandth)?
1 out of 343 = 1/343 =~ 0.003
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3) The probability of not selecting the correct access code is (round to the nearest thousandth)?
That's 1 minus the probability of getting it.
= 1 - 1/343
=~ 0.997