Question

Consider strings of length 70, in which each character is one of the letters a, b,...

Consider strings of length 70, in which each character is one of the letters a, b, c. please explain in detail.

1)How many such strings have exactly 1 letter c? please answer with detail.

2)How many such strings have exactly 12 letters c and exactly 30 letters b?

3)How many such strings have exactly 12 letters c or exactly 30 letters b?

4)How many such strings have at least 3 letters c

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Let letters A,B,C,D,E,F,G be used to form strings of length 4. How many strings of length...
Let letters A,B,C,D,E,F,G be used to form strings of length 4. How many strings of length 4 with repetitions contain A and B. How about without repetitions?
Consider mini-alphabet made of just letters {a, b, c, d, e}. How many “words” (i.e., strings...
Consider mini-alphabet made of just letters {a, b, c, d, e}. How many “words” (i.e., strings of letters from that alphabet, whether they correspond to meaningful words or not) are there of length n, for n≥1 ? Use mathematical induction to prove your answer.
1. (4 pts) Consider all bit strings of length six. a) How many begin with 01?...
1. (4 pts) Consider all bit strings of length six. a) How many begin with 01? b) How many begin with 01 and end with 10? c) How many begin with 01 or end with 10? d) How many have exactly three 1’s? 2. (8 pts) Suppose that a “word” is any string of six letters. Repeated letters are allowed. For our purposes, vowels are the letters a, e, i, o, and u. a) How many words are there? b)...
Discrete Math a.) How many bit strings are there of length five or less, not counting...
Discrete Math a.) How many bit strings are there of length five or less, not counting the empty string? b.) How many different three-letter initials with none of the letters repeated can people have? c.) How many different three-letter initials are there that begin with the letter B? d.) How many 5-element DNA sequences end with A? e.) How many bit strings of length nine both begin and end with 1?
1.How many possible orderings of letters ABCDEFG are there? 2.How many strings of length 4 can...
1.How many possible orderings of letters ABCDEFG are there? 2.How many strings of length 4 can be made using the letters ABCDEFG? 3.How many subsets of size 4 are there of the letters ABCDEFG. 4.How many possible strings are there of the letters "MATTER"? 5.Consider four books: an engineering book (E), a physics book (P), a history book (H), and an Art book (A). Consider the following problem: Suppose that the library has at least six copies of each of...
Assume strings contain ONLY the letters: a, b. How many bit strings of length 8 either...
Assume strings contain ONLY the letters: a, b. How many bit strings of length 8 either start with bbb or end with aa ?
(a) How many 12-bit strings contain exactly five 1's? (b) How many 12-bit strings contain at...
(a) How many 12-bit strings contain exactly five 1's? (b) How many 12-bit strings contain at least nine 1's? .(c) How many 12-bit strings contain at least one 1? (d) How many 12-bit strings contain at most one 1?
A computer password consists of: • letters {a, A, 6, B, ...,2,Z}, • digits {0, 1,...,9),...
A computer password consists of: • letters {a, A, 6, B, ...,2,Z}, • digits {0, 1,...,9), or = 16 • special characters {!,@,#,$,%}. In addition, a password must • contain at least one upper case letter, • contain at least one special character. How many passwords of length 8 are possible?
Consider lists of length 6 made from the letters A, B, C, D, E, F, G,...
Consider lists of length 6 made from the letters A, B, C, D, E, F, G, H. How many such lists are possible if repetition is not allowed and the list contains two consecutive vowels? How many integers between 1 and 1000 are divisible by 5? How many are not divisible by 5? How many integers between 1 and 9999 have no repeated digits? How many have at least one repeated digit?
Do each of the following. a) How many ternary strings of length 20 contain at least...
Do each of the following. a) How many ternary strings of length 20 contain at least four 1s? (Hint: A ternary string consists of 0s, 1s, and 2s.) b) How many ternary strings of length 20 contain exactly four 1s?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT