Q.2\ I need to choose a password for a computer account. The rule is that the password must consist of two lowercase letter (a to z) folowed by one capital letter (A to Z) followed by four digits (0,1,...,9) for example, the following is a valid password: rgM2808. Find the total number of possible passwords, N.

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Q: by three digits. The letters A, B, C, and D and the digits 6 and 9 will not be used. So, there are…

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A: In a certain state, automobile license plates start with one letter of the alphabet, followed by…

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Q: Suppose that in a certain state, all automobile license plates have three uppercase letters followed…

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Q: A pharmaceutical company is going to issue new ID codes to its employees. Each code will have three…

A: Total answers posted by the expert is: 875   Number of ways to select the first letter  = 24 Number…

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A: Since, all automobile license plates have three uppercase letters followed by three digits. total…

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A: A website requires a password that consist of 6 alphabets and 6 digits. There are totally 26 letters…

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A: In this question we have to find the possibility of  4 digit code from 1 to 20 .

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Q: Find k given that (2, k) is equidistant from (3, 7) & (9, 1).

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Q: 3) The access code for the safe in my office consists of 4 digits.The first digit must be odd or…

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Q: It is known to be Q-N. Accordingly, show that QxQ ~ N.

A:

Q: ΔLMN, LN is extended through point N to point O, m∠NLM=(x−4)∘,  m∠MNO=(4x−17)∘,   and m∠LMN=(x+9)∘.…

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Q: how many differecnt 4 letters words can be formed using the letters {b.a.s.e} if each word must…

A: Letters are b,a,s,e. Since this is the 4 letter words. Here, the word format does not have to be an…

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Q: Q)1 a) How many 3 digits passcodes are there if first digit must be a 1 or 2 ?   b) How many 3…

A: Q1) a) There are 10 digits 0,1,2,3,4,5,6,7,8,9. The 3 digit passcodes must be formed such that first…

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Q: A supermarket wants to send codes for $0.25 off a bag of chips to its rewards program members. Each…

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Q: 4. A witness to a hit and run accident told the police that the license number contained  the…

A: NOTE: According to guideline answer of first question can be given, for other please ask in a…

Q: Q2. If JANB| = 0, JAnc| = 0, Bnc = 1, how many ways can we choose three distinct elements. one from…

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Q: Suppose you need to enter a 4 digit code to enter a room. (a) Does the order matter? Why? (b) How…

A: Given, Suppose you need to enter a 4 digit code to enter a room. a) Yes, here order matters. Since,…

Q: 2. At a certain company, access codes nust pe 4 composed of the 26 lower case letters of the…

A: Let           A=Access codes 4 to 6 symbolsA1=Access codes with 4 symbolsA2=Access codes with 5…

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Q: The sum of digits of a two-digit number on a football player’s uniform is 11. If the digits are…

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Q: The company has agreed on an 8 character password format, comprised of upper case letters , lower…

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Q: In the United States, telephone numbers consist of a three digit area code followed by a seven digit…

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Q: An office allots 85,000 a month for operational expenses such that 3/5 is allotted to the basic…

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Q: A password for a website consists of 4 digits followed by 2 lowercase letters. Determine how many…

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A: Since repeatation is allowed, we will use permutation.

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Q: 6. Suppose you need to enter a 4 digit code to enter a room. (a) How many such codes exists if…

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Q: How many ways are there to choose a password that has a length of 20 that contains only lowercase…

A: We have to find out no. Of ways..

Q: ,a, = 3, a2= 4 and for n 2 3, a, = 2a,-1+ an-2 + 5, express a, in terms of n.

A: Solution