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Tutors Answer Your Questions about Permutations (FREE)
Question 170668: : 1.how many 7-digit telephone numbers are possible if the first digit cannot be 0 and
a: only odd digits may be used.
b: the telephone number must be a multiple 0f 10
c: the telephone number must be a multiple of 100
d: the 1st 3 digits are 481
e: no repetition are allowed.This question is from textbook
: 1.how many 7-digit telephone numbers are possible if the first digit cannot be 0 and
a: only odd digits may be used.
b: the telephone number must be a multiple 0f 10
c: the telephone number must be a multiple of 100
d: the 1st 3 digits are 481
e: no repetition are allowed.
Click here to see answer by EMStelley(143)   |
Question 176545: Please Help me solve this question: A particular website requires that users select a password with between 6 and 8 characters (inclusive). Each character can be a lower case letter, an upper case letter, or one of the digits 0,1,2,...,9. A password must start with a letter, and must have at least one digit. A sample password is tIc4SS. How many such passwords are possible.
Thanks
Click here to see answer by Fombitz(2113)  |
Question 176991: A club consists of 25 married couples. Determine how many ways a committee of 7 people can be formed from these couples if
a) there are no restrictions?
b) there are exactly 5 men on the committe?
c) at least one person must be a man?
d)there must be at least 3 women and at least 2 men?: A club consists of 25 married couples. Determine how many ways a committee of 7 people can be formed from these couples if
d)there must be at least 3 women and at least 2 men?
Click here to see answer by stanbon(26283) |
Question 179113This question is from textbook Permutation and Combinations
: Please you help me solve these question.
How do you know?
6.)Members from 6 different school organizations decorated floats for the homecoming parade. How many different ways can first,second, and third prize be awarded?
8.)Gregory has a coupon for $1 off the purchase of 3 boxes of Munchie brand cereal. The store has 5 different varieties of Munchie brand cereal. How many ways can Gregory choose 3 boxes of cereal so that each boz is a different variety?
Please rely me back as soon as you could.
Thank you so much.This question is from textbook Permutation and Combinations
Click here to see answer by stanbon(26283) |
Question 179259: Please you help me fins these problem.
How do you know?
1.) For her aquarium, Susan can choose from 4 types of fish and 3 types of plants. If she chooses one type of fish and one type of plant, how many different aquariums can Susan set up?
2.) Lottery numbers in a particular state consist of 6 digits. Each lottery ball that is drawn has six sides numbered 1-6. How many different lottery numbers are possible?
3.) The soccer team is silk-screening T-shirts. They have 4 different T-shirts and 2 different colors of ink. How many different T-shirts can be made using one ink color on a T-shirt?
4.) A travel agent is offering a vacation package. Participants choose the type of tour, a meal plan, and a hotel class from the table below
TOUR MEAL Hotel
Walking Restaurant 4-star
Boat Picnic 3-star
Bicycle 2-star
1-star
How many different vacation packages are offered?
Please rely me back as soon as you could.
Thank you so much.
Click here to see answer by stanbon(26283) |
Question 180289: For the same price you can order a basic pizza and add any two extra toppings from a choice of six different toppings. If a double of one topping is allowed, the number of different pizzas with two toppings is?
Click here to see answer by edjones(3298)  |
Question 180960: Expand using the binomial expansion formula. Show your set-up using the {n/r}notation for the binomial coefficient. Simplify the expansion.
(a - b) exponent is 6.
I do not understand the subtraction with the expansion formula. Please help!!
Click here to see answer by Alan3354(6089)  |
Question 180974: FOR THE same price you can order a basic pizza and add any two toppings from a choice of six different toppings. If a double of one topping is allowed, the number of different pizzas with two toppings is.
a. 36
b. 30
c. 12
d. 6
Click here to see answer by stanbon(26283) |
Question 182993: the computer department in a large company assigns a personal code number to each employee in the form of a three digit number,using the digit 0to 9 inclusive.code numbers starting with 0 are reserved for members of management.how many code numbers are available for non-management employees?
Click here to see answer by Alan3354(6089) |
Question 183108: this question is from the text book of class xi of chapter permutation and combination and the question is .....
three letters are dictated to three persons and an envelope is addressed to each of them, the letters are inserted into the envelopes at random so that each enveloped contains exactly one letter. find the probability that one letter is in its proper enveloped.
Click here to see answer by Edwin McCravy(2922) |
Question 183556: you are placing 12 pictures on separae pages in an album. how many different ways can you order the 12 pictures in the album? how many different ways can 4 of the 12 pictures be placed on the first 4 pages?
Click here to see answer by stanbon(26283) |
Question 187873: How many different ways are there for an admissions officer to select a group of 7 college candidates from a group of 19 applicants for an interview?
Can you help me with this problem? I know the answer is 50388, but if I do it this way it does not come out right? What am I doing wrong? HELP please!!!
19*18*17*16*15*14*13 =253955520/7 =36279360 from here I know I am a mess.
Thanks for any help, I am pulling my hair out.
Click here to see answer by jim_thompson5910(13794) |
Question 188540: Sam had 9 sweaters. If he wore one a day for a week, how many permutations are possible?
My math teacher gave me a sheet of permutations to answer at the end of class and without previous knowledge I am having a very difficult time with these questions. I am asking the one that seems the easiest so that I can try to figure out the remaining. My answer is 36 but I'm not sure if its correct or how I should have gotten there.
Thank you.
Click here to see answer by edjones(3298) |
Question 190473: a manufacturing company has to assign 6 digit lot numbers to its products using A-Z & 0-9, but the first dizit can not be a zero and the last two digits can not be alphabets(A-Z). so how many lot numbers can it produce?
Click here to see answer by solver91311(5072)  |
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720
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