Tutors Answer Your Questions about Permutations (FREE)
Question 452129: Hi.
A quiz has five true-false questions and 3 multiple choice questions with 4 options each. How many possible ways are there to answer the 8 questions..
Ive already decided that you should use permutations on this because order does matter, correct?
Click here to see answer by edjones(8007)  |
Question 452441: There are a number of people in a roo and each person shakes hands once with each of the other people.
a) If there are 5 people in the room, how many handshakes have taken place?
b) If there are 6 people in the room, how many handshakes have taken place?
c) If there are 7 people in the room, how many handshakes have taken place?
d) If there are n people in the room, how many handshakes have taken place? Write a recursive formula and explicit formula.
e) Where are these numbers on Pascal's Triangle?
f) If there were 190 handshakes altogether, how many people were in the room?
Click here to see answer by MathLover1(20849)  |
Question 452444: A bag contains 5 red marbles and 4 yellow marbles. If you can only draw 3 marbles from the bag without replacement, in how many ways can you draw 2 reds and 1 yellow?
I keep coming up with 40, but that's not an option. Please help!
Click here to see answer by stanbon(75887) |
Question 452891: I have a 'wizard deck' of cards. Total of 79 cards (44 black and 35 red). You draw a two card hand. What's the probability that you will draw AT MOST one red card. I found the probability of getting one red card = 35/79 and the probability of getting one black = 44/78. And I multiplied so 1540/6162??? This is how I interpreted the question. Am I correct?
Click here to see answer by richard1234(7193)  |
Question 453442: 3 students are selected to form a wrestling team from a group of 5 young 16 year old girls and 3 boys of the same age. Find the number of possible teams that can be selected in which there are more girls than boys.
*Please explain this question in as much detail as possible. I need a lot of help in this topic and my exams are tomorrow. Thank you! :) =)
Click here to see answer by stanbon(75887) |
Question 453776: at the conclusion of a soccer game whose two teams each include 11 players, each player on the winning team "gave five" to (slapped hands) each player on the losing team. each player on the winning team also gave five to each other player on the winning team. how many fives were given?
Click here to see answer by edjones(8007)  |
Question 453820: Some states have license plates formed by 3 letters followed by 3 digits. Both letters and the digits may be repeated.
If license plates are randomly assigned, what is the probability that a person would receive a license plate that contains all vowels and odd digits.
Click here to see answer by stanbon(75887) |
Question 453825: The phone system within a school assigns 4-digit phone numbers.
If the phone numbers are randomly assigned, what is the probability that you will be assigned a phone number that ends in 0, if the digits may repeat.
Click here to see answer by stanbon(75887) |
Question 455256: Can anyone help me solve this math problem? See below.
An urn contains 2-one dollar bills, 1 five dollar bill and 1 ten dollar bill. A player draws bills one at a time without replacement from the urn until a ten-dollar bill is drawn. Then the game stops. All bills are kept by the player. Determine:
(A) The probability of winning $11
(B) The probability of winning all bills in the urn.
(c) The probability of the game stoping at the second draw.
Click here to see answer by stanbon(75887) |
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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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