Mathematics

Mathematics, 25.07.2019 06:30, Sourcandy

How many different ways could five distinct days of the week be chosen so that at least one of them begins with the letter upper t?

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Mathematics, 25.06.2019 00:00, tdahna0403

Discrete math ( only answer if you can answer all, you! )1) there are eight different jobs in a printer queue. each job has a distinct tag which is a string of three upper case letters. the tags for the eight jobs are: {lpw,qkj,cdp,usu,bbd,pst,lsa,rhr}(a) how many different ways are there to order the eight jobs in the queue? (b) how many different ways are there to order the eight jobs in the queue so that job usu comes immediately before cdp? (c) how many different ways are there to order the eight jobs in the queue so that job usu comes somewhere before cdp in the queue, although not necessarily immediately before? (d) how many different ways are there to order the eight jobs in the queue so that either qkj or lpw come last? (e) how many different ways are there to order the eight jobs in the queue so that qkj is either last or second-to-last? 2) (6 points) license plate numbers in a certain state consists of seven characters. the first character is a non-zero digit (1 through 9). the next four characters are capital letters (a through z) and the last two characters are non-zero digits. therefore, a license plate number in this state can be any string of the form: digit-letter-letter-letter-letter-digit-digit(a) how many different license plate numbers are possible? (b) how many license plate numbers are possible if no digit appears more than once? (c) how many license plate numbers are possible if no digit or letter appears more than once?

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Mathematics, 08.08.2019 01:30, scalderon2001

1) six people are chosen at random. what is the probability that at least two of them were born on the same day of the week? the probability that at least two of the people were born on the same day of the week is 2 let s be a sample space and e and f be events associated with s. suppose that pr left parenthesis upper e right parenthesis equals one thirdpr(e)=13 , pr left parenthesis upper f right parenthesis equals three eighthspr(f)=38 , and pr left parenthesis upper e union upper f right parenthesis equals two thirdspr(e? f)=23. calculate the following probabilities. a. (e? f) b. pr(ef) c.pr(fe)

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Mathematics, 17.08.2019 18:10, rtryf57rfgth

Radio stations in a certain country use a sequence of 5 or 6 letters as their station identification call letters. the first letter must be upper y comma upper n comma upper a comma upper q comma or upper r. assume there are no restrictions on the remaining letters, and repetition is allowed. a) how many 5-letter station identifications are possible? b) how many 6-letter station identifications are possible? c) how many total station identifications are possible? d) the identification for a randomly-chosen radio station is 5 letters in length. what is the probability that all five letters are different?

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Mathematics, 06.09.2019 23:20, kayleenprmartinez100

If each coded item in a catalog begins with 3 distinct letters followed by 4 distinct nonzero digits, ﬁnd the probability of randomly selecting one of these coded items with the ﬁrst letter a vowel and the last digit even.

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