Tutors Answer Your Questions about Permutations (FREE)
Question 463108: suppose that there are four jobs to be allocated among seven workers. if only one worker is to be assigned to each job, and any of the workers is able to do any of the jobs, how many different possible allocations can be made?
my confusion is either to solve for permutation or combination.
Click here to see answer by amoresroy(361)   |
Question 463298: A password consists of 4 letters followed by a 3 digit number: how many passwords are available if there are no restrictions and how many passwords are available if none of the letters or digits can be repeated?
Click here to see answer by edjones(8007)  |
Question 463893: The call letters of a radio station must have four letters. The first letter must be a K or a W. How many different station call letters can be made if repetitions are not allowed? If repetitions are allowed?
Click here to see answer by edjones(8007) |
Question 463977: each user on a computer system has a password which can be 5 to 7 characters long, where each character is a lower case letter, an uppercase letter or a digit. Each password must contain at lease one digit. How many distinct passwords are possible
Click here to see answer by edjones(8007) |
Question 464107: 7 young girls are to be seated in a row. Calculate the number of different ways in which this can be done if 2 particular girls, Ushna and Manood, have exactly 3 of the other girls between them.
*Note: I know that the answer is this: (5C3) x (3!) x (3!) x (2!), but I can't understand how I get that. Please please explain this question in as much detail as possible as I cannot understand this topic. Please answer as soon as possible :) =) 卐
Click here to see answer by sudhanshu_kmr(1152)  |
Question 465100: In a batch of 8,000 clock radios 4% are defective. A sample of 6 clock radios is randomly selected without replacement from the 8,000 and tested. The entire batch will be rejected if at least one of those tested is defective. What is the probability that the entire batch will be rejected?
Click here to see answer by stanbon(75887) |
Question 465100: In a batch of 8,000 clock radios 4% are defective. A sample of 6 clock radios is randomly selected without replacement from the 8,000 and tested. The entire batch will be rejected if at least one of those tested is defective. What is the probability that the entire batch will be rejected?
Click here to see answer by edjones(8007) |
Question 465104: Find the indicated probability. Express your answer as a simplified fraction unless otherwise noted.
The following table contains data from a study of two airlines which fly to Small Town, USA.
# on time # late
Poduck airlines 33 6
Upstate Airlines 43 5
If one of the 87 flights is randomly selected, find the probability that the flight selected arrived on time given that it was an Upstate Airlines flight
Click here to see answer by edjones(8007) |
Question 466337: 8. A comittee of 10 women and 9 men is looking to create a 6 person committee.
a. how many ways are there of choosing this committee?
19*18*17*16*15*14=19535040
b. How many ways are there of chosing 4 men and 2 women?
(i'm confused)
c. Whats the probability that it's selected with 4 men and 2 women?
(I havent a clue)
d. What is the probility that it's selected with 5 women and 1 man?
( i do not know)
Please help! Thanks.
Click here to see answer by richard1234(7193)  |
Question 466337: 8. A comittee of 10 women and 9 men is looking to create a 6 person committee.
a. how many ways are there of choosing this committee?
19*18*17*16*15*14=19535040
b. How many ways are there of chosing 4 men and 2 women?
(i'm confused)
c. Whats the probability that it's selected with 4 men and 2 women?
(I havent a clue)
d. What is the probility that it's selected with 5 women and 1 man?
( i do not know)
Please help! Thanks.
Click here to see answer by stanbon(75887) |
Question 466653: a teacher sets 5 objective type questions out of which 4 have to be answered. find out the total number of ways in which they can be answered if first 2 questions have 4 choices and last 3 have 3 choices.
Click here to see answer by rfer(16322) |
Question 467463: 4. In a group of 12 students, 5 are female, four are taking four classes, and three are females taking four classes. If one student is selected at random, find the probability that the student is female or taking four classes
Click here to see answer by jorel1380(3719)  |
Question 468190: Each Thursday, Alan takes a break from studies and eats dinner with his grandparents. On one occasion, his choice for dessert is peppermint or vanilla ice cream with chocolate, strawberry, caramel, or pineapple topping.
(a) How many ways can Alan choose one flavor of ice cream and one topping?
1 ways
(b) How many ways can Alan choose one flavor of ice cream and two toppings?
Click here to see answer by edjones(8007) |
Question 470319: In how many ways can 12 athletes be awarded a first-place medal, a second place medal, and a third-place medal?a. 56
b. 336
c. 21
d. 3
In how many different ways can a student choose 3 out of 8 problems to complete on a take-home exam?a. 33
b. 1320
c. 220
d. 1728
If event A is certain to occur, what is P(A)?
a. 0.25
b. 0.5
c. 0
d. 1
Click here to see answer by ewatrrr(24785)  |
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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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