Tutors Answer Your Questions about Permutations (FREE)
Question 1175178: There are 2 types of popcorn and 4 types of hotdogs available at a concession stand in a cinema
Aside from the food above,The stand also provides 5 types of drinks,Eddie has a coupon that gives a 10% off the price for buying one type of food together with a drink,If eddie is going to use the coupon,How many choices does he have?
Click here to see answer by ewatrrr(24785)   |
Question 1175181: In a beauty pageant,the final 5 contestants are ada,Elaine,Iris,Olivia,and Ursula.
Given that iris,is the second runner-up,How many choices are there for selecting the champion,First runner-up,and second runner-up from the 5 contestants?
Click here to see answer by ewatrrr(24785) |
Question 1175192: There are 2 types of popcorn and 4 types of hotdogs available at a concession stand in a cinema.
1. How many types of food are available at the stand?
2. Aside from the food above, the stand also provides 5 types of drinks. Eddie has a coupon that gives a 10% off the price for buying one type of food together with with a drinks. If eddie is going to use the coupon, how many choices does he have?
Click here to see answer by ikleyn(52776)  |
Question 1175192: There are 2 types of popcorn and 4 types of hotdogs available at a concession stand in a cinema.
1. How many types of food are available at the stand?
2. Aside from the food above, the stand also provides 5 types of drinks. Eddie has a coupon that gives a 10% off the price for buying one type of food together with with a drinks. If eddie is going to use the coupon, how many choices does he have?
Click here to see answer by ewatrrr(24785) |
Question 1175241: Vanessa plans to arrange A, B, C, D, E, F, G, and H in a row on the wall. Find
the number of permutations for each of the following.
1. A and B must be placed next to each other.
2. A and B must not be placed next to each other.
3. A, B, and C must be placed next to each other, and at the same time, E,F and G must also be placed next to each other.
Click here to see answer by ikleyn(52776) |
Question 1175241: Vanessa plans to arrange A, B, C, D, E, F, G, and H in a row on the wall. Find
the number of permutations for each of the following.
1. A and B must be placed next to each other.
2. A and B must not be placed next to each other.
3. A, B, and C must be placed next to each other, and at the same time, E,F and G must also be placed next to each other.
Click here to see answer by Edwin McCravy(20054)  |
Question 1175247: A hacker tries to find the out the password of Mr. Fajardo by trial and error. It is given that the time required for testing one trial is 10 - ² second(s).
A. How long does the hacker take to find out the password of Mr. Fajardo in the worst case scenario?
B. If the hacker knows that the password of Mr. Fajardo is formed by 6 different numbers, how many long does the hacker take to find out the password in the worst case?
Click here to see answer by ikleyn(52776) |
Question 1175240: In a beauty pageant, the final 5 contestants are Ada, Elaine, Iris, Olivia, and Ursula.
1. How many ways are there to line up the 5 constestants in a row?
2. How many choices are there for selecting the champion, Firsf runner-up, second runner-up from the 5 contestants?
3. Given that Iris, is the second runner-up, how many choices are there for selecting the champion, first runner-up, and second runner-up from the 5 contestants?
Click here to see answer by ewatrrr(24785) |
Question 1175303: How many 12-bit strings (that is, bit strings of length 12) are there which:
have weight 7 and either start with 011 or end with 01 (or both)?
There were three questions before this which I have worked the answers to, but I'm confused for this part.
Other questions:
a. Q. Start with the sub-string 001? A. 2^9
b. Q. Have weight 7 (i.e., contain exactly 7 1's) and start with the sub-string 001? A. C(9,5)
c. Q. Either start with 011 or end with 01 (or both)? A. 2^9 + 2^10 - 2^7
Click here to see answer by ikleyn(52776) |
Question 1175317: a hacker tries to find out the password of mr fajardo by trial and error. it is given that the time required to test one trial is 10^-2 seconds
How long does the hacker take to find out the password of Mr. fajardo in the worst case scenario?
Click here to see answer by ikleyn(52776) |
Question 1175316: it is known that the password of an atm card must be formed by 6 numbers from 0 to 9 and the numbers used can be repeated. if mr. fajardo is going to choose six different numbers to form the password, how many arrangement can he have
Click here to see answer by ikleyn(52776) |
Question 1175314: Vannessa plans to arrange A,B,C,D,E,F,G and H in a row on the wall. Find the number of Permutations for the following: A,B and C must be placed next to each other, And at the same time,E,F and G must also placed next to each other
Click here to see answer by ikleyn(52776) |
Question 1175318: a hacker tries to find out the password of mr fajardo by trial and error. it is given that the time required to test one trial is 10^-2 seconds
if the hacker knows that the password of Mr. fajardo is formed by 6 different numbers How long does the hacker take to find out the password of Mr. fajardo in the worst case scenario?
Click here to see answer by ikleyn(52776) |
Question 1175349: (i) Seven friends together with their respective partners all meet up for a meal. To commemorate the occasion they arrange for a paragraph to be taken of all 14 of them standing in a line. How many different arrangements are there if each friend is standing next to his or her partner?
(ii) Mary saves her digital images on her computer in three separate folders named ‘Family’, ‘Holiday’ and ‘Friends’. Her family folder contains 3 images, her holiday folder contains 4 images and her friends folder contains 8 images. All the images are different. Find the number of different ways in which Mary can choose 6 of these images if there are 2 from each folder.
(iii) Find the number of ways of arranging all 12 letters of word STRAWBERRIES where the first and the last letters are vowels.
Click here to see answer by ikleyn(52776) |
Question 1175384: Suppose a "combination" lock has the numbers 0 to 39 on it. In order to open the lock, a person must dial the correct three-number sequence, such as 12 left, 24 right, 6 left.
a. How many different three-number sequences for this lock are possible if all three numbers are even numbers? Assume repeated numbers are not allowed. (Note: zero is an even number.)
b. How many different three-number sequences are possible if only the middle number must be even? Assume repeated numbers are not allowed.
c. What would the answer to part (f) be if we assume repeated numbers are allowed?
Click here to see answer by greenestamps(13198)  |
Question 1175374: An elementary school is offering 3 language classes: one in Spanish, one in French, and one in German. These classes are open to any of the 104 students in the school. There are 42 in the Spanish class, 31 in the French class, and 16 in the German class. There are 15 students that in both Spanish and French, 4 are in both Spanish and German, and 6 are in both French and German. In addition, there are 2 students taking all 3 classes. If two students are chosen randomly, what is the probability that at least one of them is taking German?
Click here to see answer by ikleyn(52776) |
|
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
|
