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  1. S

    Comparing industrailized countries vs. less-developed

    should i use the residual plot in comparing the industrailized countries vs. less-developed country? i mean, is it relevant if i use that? coz here is my thesis...What are the effects of population, GDP, GDP per capita and unemployment rate in the economy of industrialized country and...
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    Binomial theorem

    do u know wat is prime factorization?
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    Binomial theorem

    thanks vietdao again for helping me out...
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    Binomial theorem

    anyone guys, is the third equation b^2 2n a^n-2 = 81,648?
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    Binomial theorem

    is the thrid equation this... b^2 n a^n-2 = 81,648 anyways, why do u need to find the third equation, since you have the two?
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    Binomial theorem

    guys, is it like this...? for t2 = nC1 (ax)^n-1 (by)^1 = 34992x^n-1y bna^n-1 = 34992 a^n = 6561 a^n = 3^8 therefore the answer for n = 8 and for a = 3, so you just have to find the b. but the second equation is bna^n-1 = 34992, so ill just substitute the values that i found... it is like...
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    Binomial theorem

    guys, is it like this...? for t2 = nC1 (ax)^n-1 (by)^1 = 34992x^n-1y bna^n-1 = 34992 a^n = 6561 a^n = 3^8 therefore the answer for n = 8 and for a = 3, so you just have to find the b. but the second equation is bna^n-1 = 34992, so ill just substitute the values that i found... it is like...
  8. S

    Binomial theorem

    anyone could help me with this question... in the expansion of (ax + by)^n, the coeffiients of the first 3 are 6561, 34992, and 81648., Find the value if a, b, and n. i did this... t1 = nC0 (ax)^n = 6561x^n a^n = 6561 t2 = nC1 (ax)^n-1 (by)^1 = 34992x^n-1y bna^n = 34992 but i'm not...
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    Birthday probability

    is it 1-(364/365)?
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    Birthday probability

    this is the problem... there are 25 students in a Data Management Class. Determine the probability that at keast two of them share the same birthday. (Assume that every year has 365 days) --> i have no clue what technique what to do here... coz this is a thinking question so its kinda hard for...
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    Confusing probability

    this is the problem... 1. nine horses are entered in a horse race. If you "box" three horses (three are chosen and they can finish in any of the first 3 positions in the race), determine the probability that you will hold the winning ticket. -->i tried this one... (3C1*3C2*3C3)/9C3 but my...
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    Deck of card probability

    tide, ur so good!!! with ur explanation, i really understand it well...thanks man!
  13. S

    Deck of card probability

    anyways, i found the solution for #2 but still i dont get the question in #1
  14. S

    Theory of relativity and time

    and the most accurate way of timing the two events lets say a person observing and the person in the event (like in the rocket) is the cesium clock.
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    Deck of card probability

    tide, i still cannot get the right answer. like i solve many times, but i really can't find the correct answer... i tried this one... 5C4*51*1/52C4, but its is wrong since the right answer in my book is 1/20825
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    Deck of card probability

    i have no idea which technique of probability to choose. here is the problem... 1. a five-card poker hand is dealt and the last card is turned face up. Determine the probability that you have been dealt four aces, given that the card turned over is an ace. 2. I how many ways can a group of...
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    Permutations of the number of players on a baseball team

    so my answer for odd is right and for even it is wrong?
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    Solve the expression for n Є N

    i got like (2n+4)(2n+3)(2n+2) = 2/3(n+4)(n+3)(n+2)(n+1) then... 2(n+2)(2n+3)2(n+1) = 2/3(n+4)(n+3)(n+2)(n+1) which is 4(2n+3) = 2/3(n+4)(n+3) and i dont know wat to do next
  19. S

    Permutations of the number of players on a baseball team

    for odd, it is 9!/5! and for even, it is 9!/4!
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    Solve the expression for n Є N

    what if you get like this.... -24(2n+3)(n+4)(n+3) = 0... what should i do to the -24? or it is just 0, then the value for n is just n=-2/3, n=-4 and n=-3?
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    Solve the expression for n Є N

    now i get gale... thanks so m uch, and it is clearer for me now...
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    Solve the expression for n Є N

    correct me if im wrong ok? i've try the other side... should you make the numerator 2/3(n+4)! to -2/3(n-4)! in order to cancel it from n(n-1)(n-2)(n-3)(n-4)?
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    Permutations of the number of players on a baseball team

    ceptimus, is my work on the right track? is it 9!/5! or 9x8x7x6 for 4d? since the numbers runs from 0 to 9, but there is only 5 odd numbers, and same thing with 4e? this is the question... 4. How many four digit numbers are there with the following retrictions? d) the number is odd e) the...
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    Solve the expression for n Є N

    so you mean \frac{(2n+4)!}{(2n+1)!} is same thing as writing as (2n+4)(2n+3)(2n+2)(2n+1)/(2n+1)?
  25. S

    Permutations of the number of players on a baseball team

    ok, thanks for guiding me to the right way cetimus...
  26. S

    Permutations of the number of players on a baseball team

    ill check the site... thanks for the addiional info
  27. S

    Permutations of the number of players on a baseball team

    ohhh i see, why is the formula different from what i learned, coz it is nPr = n!/(p!q!r!)? im soo confused now on the formulas
  28. S

    Permutations of the number of players on a baseball team

    shouldn't be 9 players they are asking?
  29. S

    Solve the expression for n Є N

    help from anyone with this problem...
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