Tutors Answer Your Questions about Permutations (FREE)
Question 559793: Please help me solve this SAT practice question?
Berkeley Airlines tickets have 4-digit codes. How many codes are possible if the digits are any 4 digits? What if the digits are all multiples of three?
I tried to go through and list all the possible codes, but that was taking forever. So I was just wondering if there are any more efficient ways of solving these problems.
Click here to see answer by scott8148(6628)   |
Question 560066: If I have 6 objects labeled A-F and I need to know how many different combinations that can be made but each combination MUST include object A, how would I figure this out? And the combinations aren't limited to having to have 6 letters...for example, A by itself is a combination. AB, AC,AD, and DA,EA,FA are all combinations. Any help?
Click here to see answer by sudhanshu_kmr(1152)  |
Question 560928: North Carolina issues general license plates with 3 letters followed by 4 numbers. (The first number cannot be zero) Numbers can repeat, but letters cannot. How many license plates can North Carolina generate with this format?
Click here to see answer by stanbon(75887) |
Question 561902: The Peterson family is planning a picnic for 16 people. They will be serving hotdogs. If hotdogs come in package of eight and hotdogs buns come in package of 6 what is the minimum amount of each that they should purchase so they have an equal number of hotdogs and buns and each person can have the same number of hotdogs.
Click here to see answer by josmiceli(19441)  |
Question 562279: The password must be 2 characters long. each character must be a letter a-z,a digit 0-9,or one of the 10 punctuation characters ! @ # % % ^ & * ().each password must contain at least 1 digit or punctuation character. Find the number of legal passwords?
Click here to see answer by issacodegard(60)  |
Question 563661: if i have to pick two numbers from 1 to 10, provided the first number can't be greater than the second number. How many possible way I can represent the two number. Please suggest the formula to use?
E.g.
12 - valid
21 - not valid
Click here to see answer by josmiceli(19441) |
Question 564954: The functions f and g are defined by these sets of input and
output values.
g = {(1, 2), ( 2, 4), (5, 5), (6, 2)}
f = {(2, 1), (4, 2), (5, 5), ( 2, 6)}
a. Find g( f (2)).
b. Find f (g(6)).
c. Select any number from the domain of either g or f, and find f (g(x)) or g( f (x)), respectively. Describe what is happening.
Click here to see answer by issacodegard(60) |
Question 565729: Use counting principle to determine answer to part (a). Assume that each event is equally likely to occur. A couple plans to have children. (a) determine the number of points in the sample space of the possible arrangements of boys and girls.
Click here to see answer by stanbon(75887) |
Question 566618: Suppose that the format for license plates in a certain state is 2 letters followed by 4 numbers.
- How many different plates are there if the letters can be repeated but no two numbers can be the same?
- How many different plates can be made if repetitions of numbers and letters are allowed except that no plate can have four zeros?
Thanks!
Click here to see answer by josmiceli(19441) |
Question 567608: If an experiment consists of throwing a die and then drawing a letter at random from the English alphabet, how many points are in the sample space?
-a. How many distinct permutations can be made from the letters of the word columns?
b. How many of these permutations start with the letter m?
Click here to see answer by stanbon(75887) |
Question 567607: In a medical Study patients are classified in 8 ways according to whether they have blood type AB+, AB-, A+, A-, B+, B-, O+, O-, and also according to whether their blood pressure is low, normal, or high. Find the number of ways in which a patient can be classified.
Click here to see answer by stanbon(75887) |
Question 567840: Oops. I posted this with the wrong email address. Can someone please help.
Which pair has equally likely outcomes? List the letters of the two choices below which have equal probabilities of success, separated by a comma. A standard deck of cards has 52 face cards and four Aces (Aces are not face cards).
A. rolling a sum of 7 on two fair six sided dice
B. drawing a spade out of a standard 52 card deck
C. drawing a queen out of a standard 52 card deck given its a face card.
D. drawing a red card out of a standard 52 card deck
E. rolling a 4, 5 or 6 on one fair six sided die
Click here to see answer by Theo(13342)  |
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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, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035
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