Tutors Answer Your Questions about Permutations (FREE)
Question 748710: Can you please help me with this word problem?
Nikki has a collection of 32 CDs, 18 r&b, and 14 hip hop. As she is leaving for a trip, she randomly chooses 6 CDs to take with her. What is the probability that nikki selects 3 r&b and 3 hip hop cds? Answer has to be 4 decimal places!
Thank you so much!!
Click here to see answer by stanbon(75887)  |
Question 749394: Q15 In how many ways can we distribute seven apple and six oranges among 4 children so that each children receive at least one apple?
Q16 From a group of 7 men and 6 women, five persons are to be selected to form a committee so that at least 3 men are there on the committee. In how many ways can it be done?
Q17 A committee of 7 consisting of a chairman, vice chairman, a secretary, and 4 other member is to be chosen from a class of 20 students. In how many ways can this committee be chosen?
Q18 Weave and Kline, a software development company, has received nine new user requirement regarding a new computer system. In how many ways can these new user requirements be directed to three of the company's software developers if each of the software developers has to handle three new user requirements?
Q19 A restaurant has 6 different desserts. Find the number of ways a customer can choose
a. 1 dessert
b. 2 of the desserts
Q20 Given a class of 12 girls and 10 boys
a. In how many ways can a committee of five consisting of 3 girls and 2 boys be chosen?
b. What are the possible committees of five can be chosen at random from the class, consists of three girls and two boys?
c. How many of the the possible committees of five have no boys? (i.e. consists only of girls)
Click here to see answer by lynnlo(4176) |
Question 749388: plz help me:
Directions for Q1 to 3:
In a famous short-time game named CROSS, each player
puts a mark (O OR x) one by one inside a 3x3 grid (9 slots).
Two players face the following situation in between the
game.
A player will put his mark in a line such that:
(a) it already contains two of his own marks (for winning)
(b) it already contains two of the opponents marks (for
saving the game)
It is known that player always gives priority to Winning
over saving.
1. What could be the mark of the person who started the
game?
A) X
B) O
C) X or O
D) Data insufficient
2. The player who wins the match uses which mark?
A) X
B) O
C) X or O
D) Data insufficient
3. Probability of A (with symbol O), winning the game
if both players freely mark anywhere?
A) 0.76
B) 1
C) 0.5
D) 0.33
Click here to see answer by lynnlo(4176) |
Question 749386: Plz some1 help me to solve this problem:
An 8 litre cylinder contains a mixture of oxygen
and nitrogen, the volume of oxygen being 16% of
the total volume. A few litres of the mixture is
released and an equal amount of nitrogen is added.
Then the same amount of the mixture as before is
released and replaced by nitrogen for the second
time. As a result, the oxygen content becomes 9% of
the total volume. How many litres of mixture is
released each time?
Click here to see answer by lynnlo(4176) |
Question 749386: Plz some1 help me to solve this problem:
An 8 litre cylinder contains a mixture of oxygen
and nitrogen, the volume of oxygen being 16% of
the total volume. A few litres of the mixture is
released and an equal amount of nitrogen is added.
Then the same amount of the mixture as before is
released and replaced by nitrogen for the second
time. As a result, the oxygen content becomes 9% of
the total volume. How many litres of mixture is
released each time?
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 750507: 2. How many ways are there to arrange 10 students in two lines? (a line must have at least 1 student)I used nCr on a TI 84+ Calculator and got 28, but i have a feeling I am rather mistaken. How do I go about solving this?
Click here to see answer by FrankM(1040)  |
Question 751226: You plan to offer two or three choices of pizza in each of three categories-size,crust,and topping. The more types of pizza the better but you're limited by kitchen space to a total of 18 types. I have tries figuring out this problem.. I just can't! Can you help
Click here to see answer by Edwin McCravy(20054)  |
Question 751345: There are 5 airplanes ready to depart. Runway A and runway D are available. How many ways can 2 planes be assigned to runways without using the same runway?
Could you please tell me the answer, and teach me which is N and which is R from the permutation formula, it is a permutation right? Thank you so much for taking the time to answer my question.
Click here to see answer by stanbon(75887) |
|
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
|
