Tutors Answer Your Questions about Permutations (FREE)
Question 691445: How many different 10-digit phone numbers exist with an area code of 281?
My first question was how many different 10-digit phone numbers exist in which I solved 92,378. I am thrown off by the question involving the exact area code.
Click here to see answer by Edwin McCravy(20054)  |
Question 418547: Three cards are drawn in succession from an ordinary deck of playing cards. Find the probability that the first card is a red ace, the second card is a ten or jack, and the third card is greater than 3 but less than 7 if the cards are drawn
a) without replacement
b) with replacement
Click here to see answer by seriousgr8(1)  |
Question 695500: three different language books, two different social science books and five mathematics books are to be arranged on a shelf. How many different arrangements are possible if the book in each group must all stand together ?
Click here to see answer by stanbon(75887) |
Question 695499: three different language books, two different social science books and five mathematics books are to be arranged on a shelf. How many different arrangements are possible if the book in each group must all stand together ?
Click here to see answer by stanbon(75887) |
Question 696538: Can someone please help with conjectures? I do not understand how to create a formula for these. I get how 1 = 1, or n^2 and #2 with 3^2 but that is as far as I understand.
Consider the following four equations:
1) 1 = 1
2) 2 + 3 + 4 = 1 + 8
3) 5 + 6 + 7 + 8 + 9 = 8 + 27
4) 10 + 11 + 12 + 13 + 14 + 15 + 16 = 27 + 64 = 91
Conjecture the general formula suggested by these four equations, and prove your conjecture.
Click here to see answer by Edwin McCravy(20054)  |
Question 696870: You have a collection of six numbered balls; 1 through 3 are blue and 4 through 6 are green. How many different arrangements of these balls in a line are possible? What percentage of those arrangements have three blue balls followed by three green balls?
Click here to see answer by reviewermath(1029)  |
Question 696778: an call for volunteers to act in a community play brings out ten men and eight women. if there are nine parts in the play, four for males and five for females, how many different cats are possible?
Click here to see answer by Afolabyte(4) |
Question 697368: Use synthetic division to find the quotient Q(x) and remainder R when
P(x)= -x^3 +24x -5 is divided by x+5 . Specifically, complete the synthetic division table below, and write your answer in the form Q(x) +R/(x+5).
-5/ -1, 0, 24, -5
?, ?, ?
______________________
?, ?, ?, ?
-x^3 +24x -5/ (x+5) = ? + ?/(x+5)
Click here to see answer by nerdybill(7384)  |
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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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