there are 14 boys and 16 girls in a class.write the ratio of boys to girls in simplest form.?
445699
14:16 then simplified 7:8
192695
You have the following lists:\nB B B\nB B G\nB G B\nG B B\nB G G\nG B G\nG G B\nG G G\n\nSo you have 8 variations and of those 3 are 2 boys 1 girl so the probability is 3/8.
599863
no. A has a student that takes 9 hours, B has a student that takes 9 hours. and 16 students took exactly 9 hours
946574
You want the number of mean in the entire class.  You know that there are 3 men in the class.  The total number of people in the class is (57 + 3), or 60.  Therefore there are 3/60 men in the class.  Divide both 3 and 60 by 3, and you get a proper fraction of 1/20.
842276
1,2,3,4,6,8,12,16,24,48 \n\nlolz hope this helps :)
760198
There are lots of answers:\n\n5 boys and 19 girls\n7 boys and 17 girls\n11 boys and 13 girls\n13 boys and 11 girls\n17 girls and 7 girls\n19 girls and 5 boys\n\nThere is no way to know the exact answer without additional pieces of information.  By the way, 1 is not considered prime.
590754
6/16=37.5%\n\nSixteen different ways to have 4 children (excluding hermaphrodites.)\n\n1. b b b g  \n2. b b g b\n3. b g b b\n4. g b b b\n5. g g g b\n6. g g b g\n7. g b g g\n8. b g g g\n9. b b b b\n10. g g g g\n11. b b g g *\n12. b g b g *\n13. b g g b * \n14. g g b b *\n15. g b g b * \n16. g b b g *
1152243
I think it's 16 because of the math involved, you cut 16 in half and get 8, cut that in half you get 4, cut that in half and get 2, then a final winner.  Try doing that with 15 or 18
1033499
19222  \n\n(19224 if you count the bus driver)\n\n[(7 girls) x (7 bags/girl) x (7 cats/bag) x (7 nipples/cat)] + [(7 girls) x (7 bags/girl) x (7 cats/bag) x (7 kittens/cat) x (7nipples/kitten)] + [(7 girls) x (2 nipples/girl)]
812841
Given 5 children there are 2^5 or 32 possible combinations of girls and boys.  Since there is only one combination with all boys that leaves 31 combinations containing at least 1 girl.  Therefore the probability is 31/32.
761353
Let # of students be s\n\nTherefore s = 2*(4/3*4* 15) = 160\n\nDetailed answer:\n\n15 = ¼ of students who bought pizza\nSo # of students who bought pizza = 4* 15 = 60\n60 = ¾ of students who bought lunch\nSo # of students who bought lunch = 60/¾ = 80\n80 = ½ of students in cafeteria\nSo # of students in cafeteria = 80/½ = 160
873857
this is like statistic..in one side u have 14 individuals and the other side u have 16 individuals so when you test the difference of 2 population take 14 out of each of population and the sum of that is 28 so,...28 is the answer....lol
171134
As some of you noted, there are three cases to consider:\nGirls shake with Girls\nBoys shake with Girls\nBoys shake with Boys\n\nNotice the boys with boys shakes are 0, noted in the original question.  \n\nGirls shake with Girls:\nWell, each girl shakes with 49 other girls.  So 50*49 right?  Whats the problem?  if A shakes with B, then B must have shook with A also.  So each shake is counted twice.  Hence we need to divide the answer by two.  50*49/2 is your answer.\n\nBoys with Girls\nWe use the same technique.  Each girl shakes with 50 boys.  Thats 50 * 50.  But each shake is counted exactly once because we are only counting the girls side of things.\n\nThe final answer is:\n\n25*49 + 50*50 = 3725
438798
if 4/12 of 315.\n\nso divide 315 into 12 groups and the total number of people in each group r = 26.25 \n\nnow u take 4 groups of 26.25 members. that means u multiply 4*26.25 = 105.\n\nthen u take 105 and subtract it by 315 cuz there r 315 people in the book club right?\nso its 315- 105 = 210 females in the book club!
512917
13!8!/20!\n\nyour group sizes r, 2 4 6 8\n\nwithout any restriction of who goes together, u have this many choices: 20C2*18C4*14C6----A\n\nwith restriction of 7 ppl must goes together, u have this many choices: 13*12C6*6C4-----B\n\nThe prob of getting 7 ppl in a group is A/B. u do the algebra and u will get 13!8!/20!\n\n\nreasoning:\nfor 7 ppl to be in a group, the group must take at least 7 person. there is only one group that can do so. Taking the 7 ppl as one entity that must be allocated together, u have only left with 14 objects/persons to arrange. After the group for 8 take the group of 7 ppl, it can still take one and it has 13 choices from the remaining people.\n\nafter choosing the group of 8, u r left with 12 ppl to pick for the group of 6, 4 and 2 and the number of choices are, 12C6*6C4*2C2\n\nso, the total number of possibility would be 1*13*12C6*6C4*2C2.\n\n\n\n\n\n\n"....with restriction of 7 ppl must goes together, u have this many choices: 13*12C6*6C4-----B....."\n\nthis is because, in the special case of that 7 particulat person must be in a group, u group them together to form one. so, how, u only have 14 objects to allocate to groups. get it? since group of 7 can only go into the group that can fit 8 person... so, it's possibility is 1.\n\nAfter that, since the group of 8 has been filled up by the 7 person, u have one place in it left, and 13 ppl to choose from to fill it. hence, 13.\n\nthen, for the remaining of the task, u simply choose out of 12 people for your 6, 4, and 2 men groups.\n\n\n\nso, u have 1x13x12C6x6C4x2C2 to forming THIS(with 7 particular person in one group) type of group.\n\nthe prob(forming THIS group)=(number of way to form THIS type of group)/(number of way to form ANY type of group)\n\nget it?\n\n\n\n\nI'm glad u really wanna know. most ppl got the answer and they r satisfied. too bad i m not good at explaining. contact me if u need more help.\n\n\n\n\n\n\noh, sorry. u misunderstood me. yes, u r perfectly right. there r 13 ppl left after u allocate the 7 ppl to the "8" group. What i was saying was... b4 u do that, u have 14 "person".... one of them being a group of 7 people. sorry for confusing u. And from what u said, yes, u got the idea right.
16819
think about boys and girls
704392
b + g = 27 and g = b + 3\nReplacing g with b+3 in the first equation, we get\nb + b + 3 = 27\nCombine like terms\n2b + 3 = 27\nSubtract 3 from each side\n2b = 24\nDivide both sides by 2\nb = 12 boys\nSince there are 3 more girls than boys, we add 3 to 12.\ng = 12+3 = 15 girls