Tutors Answer Your Questions about Permutations (FREE)
Question 307255: I'm not sure if this goes under "Combinatorics", as I've never heard of that term before, but here goes..
Jim can fill a pool carrying buckets of water in 30 minutes. Sue can do the same job in 45 minutes. Tony can do the same job in 1 1/2 hours. How quickly can all three fill the pool together?
Click here to see answer by nerdybill(7384)  |
Question 307256: Two cyclists start biking from a trail's start 3 hours apart. The second cyclist travels at 10 mph and starts 3 hours after the first cyclist who is traveling at 6 mph. How much time will pass before the second cyclist catches up with the first from the time the second cyclist started biking?
Not sure if this is Combinatorics, but help is appreciated :)
Click here to see answer by checkley77(12844) |
Question 307809: Ten different books are to be arranged on a shelf. Two of the books are by E. Smith, three of the books are by A. Houseman and the remaining books are all by different authors. How many ways can the books be arranged on the shelf if Smith's books and Houseman's books must be kept together?
So far what I have is (2!)(3!)(5!) Not sure if thats right or not. My answer was 1440.
Any help will be much appreciated. :)
Click here to see answer by scott8148(6628)  |
Question 308851: An ice cream shoppe carries five kinds of ice cream. They also have three kinds of toppings. One serving consists of three scoops of ice cream and three scoops of toppings.The ice cream is always scooped before the toppings are added. In how many distinct ways can the serving be assembled? Also if the customer wants three different flovors of ice cream how many choices does he have?
Click here to see answer by stanbon(75887) |
Question 309212: How many different 6-digit license plates can be made if the first digit must not be 0 and no digits may be repeated?
So far I have tried the 'Fundamental Counting Principle', but I cannot seem to get the answer. I have tried 9!, but that answer makes no sense, I just do not know what to do! Please Help! Thank you.
Click here to see answer by solver91311(24713)  |
Question 309212: How many different 6-digit license plates can be made if the first digit must not be 0 and no digits may be repeated?
So far I have tried the 'Fundamental Counting Principle', but I cannot seem to get the answer. I have tried 9!, but that answer makes no sense, I just do not know what to do! Please Help! Thank you.
Click here to see answer by scott8148(6628)  |
Question 316510: Need help with a question:
Twelve students in a Business Statistics class are to be formed into three teams of four. How many different ways can this be done?
I tried doing 12!/3!(4!) but it doesn't seem right any help would be appreciated.
Click here to see answer by stanbon(75887) |
Question 316547: an experiment consists of selecting 3 light bulbs. The selected bulbs are labeled D for defective or N for non-defective.
a)list the associated sample space
b)List the event, E, the first bulb selected is defective and the last bulb
selected is non-defective.
c)What is the probability of event E?
Click here to see answer by Fombitz(32388)  |
Question 316557: DUchess Blue Corporation wants to maximize its profit on products A and B. The profit on one unit of Produc A is $50, while the profit on one unit of Product B is $45. Each unit of Product A requires 3 hours of assembly time and 2 hours of finishing time, while each unit of Product B requires 4 hours of assembly time and 6 hours of finishing time. The departmental capacity (in total hours) is 2700 for assembly and 2400 for finishing. What is the maximum profit, and how many of each product should be produced in order to achieve that profit?
Click here to see answer by Fombitz(32388)  |
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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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