Tutors Answer Your Questions about Permutations (FREE)
Question 1131153: Suppose that 5 thank-you notes are written and 5 envelopes are addressed. Accidentales, the notes are randomly inserted into the envelopes and mailed without checking the addressed. What is the probability that all the notes will be inserted into the correcto envelopes? Leave the probability as a fraction. Do not simplify the fraction.
Click here to see answer by ikleyn(52779)   |
Question 1131152: A blood pressure test was given to 450 women ages 20 ton36. It showed that their mean systilic blood pressure was 118.0 mm HG, with a standard deviation of 12.9 mm Hg.
(A) Determine the z-score, to the nearest hundredth, for woman who had a systilic blood pressure trading of 114.1 mm Hg.
(B) The z-score for one woman was 2.18. What was her systilic blood pressure trading? (Round your answer to one decimal place.)
Click here to see answer by Boreal(15235)  |
Question 1131475: You are taking a multiple-choice test that has 6 questions. Each of the questions has 4 answer choices, with one correct answer per question. If you select one of these choices for each question and leave nothing blank, in how many ways can you answer the questions?
Click here to see answer by solver91311(24713)  |
Question 875907: The number of possible sequences of all the hearts from a standard deck, given that the ace and king cannot be next to each other and that the 13 cards are dealt in a single row, is __________________.
Click here to see answer by mckenzr(1) |
Question 1131671: Roy must elect 3 courses from among 3 courses in group I and 6 courses in group II. If he must take at least 1 of his 3 electives from each group, how many choices does he have?(Hint: First find how many choices he has if he elects only 1 course from group I. Then find how many choices he has if he elects 2 courses from group I. Since he must do one or the other of these, the final answer is the sum of the two answers.)
I think the answer is 36
Click here to see answer by greenestamps(13200)  |
Question 1131671: Roy must elect 3 courses from among 3 courses in group I and 6 courses in group II. If he must take at least 1 of his 3 electives from each group, how many choices does he have?(Hint: First find how many choices he has if he elects only 1 course from group I. Then find how many choices he has if he elects 2 courses from group I. Since he must do one or the other of these, the final answer is the sum of the two answers.)
I think the answer is 36
Click here to see answer by ikleyn(52779) |
Question 1131719: out of 5 mathematician and 7 statistician a committee consisting of 2 mathematician and 3 statistician is to be formed.in how many ways this can be done if
A. there is no restriction?
B.one particular statistician should be included?
C.two particular mathematician cannot be included in the committee?
Click here to see answer by Boreal(15235) |
Question 1131955: From a pack of 9 cards numbered 1-9, three cards are drawn at random and laid on a table from left to right. What is the probability that the number formed exceeds 400?
I know the 1st digit has to be 4,5,6,7,8 or 9, but don't know how to calculate the no. of ways.
Click here to see answer by greenestamps(13200) |
Question 1131973: In how many ways can 7 children join hands to form a circle if they all face inward? In how many of these cases does child A jion hands with special friends B and C?
I am having trouble with the second part
Click here to see answer by ikleyn(52779) |
Question 1132180: Mimi has eight books from the Statistics is Fun series. She plans on bringing two of the eight books with her in a road trip. (Show all work. Just the answer, without supporting work, will receive no credit).
(a) Does the order matter in the book selection?
(b) Based on your answer to part (a), should you use permutation or combination to find the number of the different ways the two books can be selected?
(c) How many different ways can the two books be selected?
Click here to see answer by addingup(3677)  |
Question 1132180: Mimi has eight books from the Statistics is Fun series. She plans on bringing two of the eight books with her in a road trip. (Show all work. Just the answer, without supporting work, will receive no credit).
(a) Does the order matter in the book selection?
(b) Based on your answer to part (a), should you use permutation or combination to find the number of the different ways the two books can be selected?
(c) How many different ways can the two books be selected?
Click here to see answer by ikleyn(52779) |
Question 1132270: In a different plan for area codes, the first digit could be any number from 1 through 7, the second digit was either 1 or 2, and the third digit could be any number except 3, 6 or 7. With this plan, how many different area codes are possible?
Click here to see answer by Fombitz(32388)  |
Question 1132270: In a different plan for area codes, the first digit could be any number from 1 through 7, the second digit was either 1 or 2, and the third digit could be any number except 3, 6 or 7. With this plan, how many different area codes are possible?
Click here to see answer by Alan3354(69443)  |
Question 1132270: In a different plan for area codes, the first digit could be any number from 1 through 7, the second digit was either 1 or 2, and the third digit could be any number except 3, 6 or 7. With this plan, how many different area codes are possible?
Click here to see answer by MathTherapy(10552)  |
Question 1132411: A box contains 1212 transistors, 33 of which are defective. If 33 are selected at random, find the probability that
a. All are defective. (Type a fraction. Simplify your answer.)
b. None are defective. (Type a fraction. Simplify your answer.)
Click here to see answer by greenestamps(13200) |
Question 1132415: A box contains 17 transistors, 4 of which are defective. If 4 are selected at random, find the probability that
a. All are defective. (Type a fraction. Simplify your answer.)
b. None are defective. (Type a fraction. Simplify your answer.)
Click here to see answer by ikleyn(52779) |
Question 1132416: A hand consists of 5 cards from a well-shuffled deck of 52 cards.
a. Find the total number of possible 5-card poker hands.
b. A heart flush is a 5-card hand consisting of all heart cards. Find the number of possible heart flushes.
c. Find the probability of being dealt a heart flush. (Round to six decimal places as needed.)
Click here to see answer by Boreal(15235) |
Question 1132413: A hand consists of 5 cards from a well-shuffled deck of 52 cards.
a. Find the total number of possible 5-card poker hands.
b. A spade flush is a 5-card hand consisting of all spade cards. Find the number of possible spade flushes.
c. Find the probability of being dealt a spade flush. (Round to six decimal places as needed.)
Click here to see answer by Boreal(15235) |
Question 1132413: A hand consists of 5 cards from a well-shuffled deck of 52 cards.
a. Find the total number of possible 5-card poker hands.
b. A spade flush is a 5-card hand consisting of all spade cards. Find the number of possible spade flushes.
c. Find the probability of being dealt a spade flush. (Round to six decimal places as needed.)
Click here to see answer by Alan3354(69443) |
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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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