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Kobotan [32]
3 years ago
9

An access code consists of of a letter followed by four digits. Any letter can be used, the first digit cannot be 0, and the las

t digit must be even. (a) Find the number of possible access codes. (b) What is the probability of randomly electing the correct access code on the first try? (c) what is the probability of not selecting the right access code on the first try?
Mathematics
1 answer:
scoundrel [369]3 years ago
4 0

Answer:

(a)117000  (b)1/117000 (c)116999/117000

Step-by-step explanation:

(a)There are 26 letters, hence <u>26</u> options for the first character

There are <u>9</u> options for the second character, because, you can place 1,2,3,4,5,6,7,8,or 9.

For the third character you can have <u>10</u> options, since, you can 1 through 9 and 0.

The 4th one has <u>10</u> options too since the same terminology is used for the 3rd digit as the 4th one.

For the last digit, You have <u>5</u> options,0,  2, 4, 6, and 8.

Hence, the answer is 26*9*10*10*5 = <u>117000</u>

(b)There is only 1 correct code, so the chance of getting it right is <u>1/117000</u>.

(c)There are 117000-1 ways oh getting it wrong, so <u>116999/117000.</u>

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<u>Answer:</u>

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<h3>What is the cost of the bond?</h3>

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Find out more on the cost of bonds at brainly.com/question/15567868.

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