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Lol, simple math) can you solve it?

Discussion in 'BlackHat Lounge' started by lexa500, Mar 11, 2014.

  1. lexa500

    lexa500 Registered Member

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    allright. so this one is just for fun, so i decided to share with BHW:

    we have a heap of cucumbers, laying on the floor.
    the heap weights 100 kilograms.
    We know that, the cucucmbers consist by 99% of water (not very good, but we have what we have)
    After the water vaporised, our heap was by 98% of water.
    Can you calculate, what will be weight of the heap after vaporisation?
     
  2. cmax99

    cmax99 Regular Member

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    98.98989898989......kilograms
     
  3. evilclown

    evilclown Senior Member

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    mind blowing

    b3mWa.gif
     
  4. lexa500

    lexa500 Registered Member

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    not correct, but obvious
     
  5. Veyron

    Veyron BANNED BANNED

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    I think you meant to post your question here:

    http://www.mymathforum.com/
     
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  6. lexa500

    lexa500 Registered Member

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    just wanted to test if anyone here can solve it. it`s quite simple.
     
  7. IamNRE

    IamNRE Jr. VIP Jr. VIP Premium Member

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    Is it something low like 2-3 kg?
     
  8. Veyron

    Veyron BANNED BANNED

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    if 3+5+7+.........+n terms/ 5+8+11+............+10 terms =7

    the value of n (cucumber) is

    a) 35 b) 36 c) 37 d) 40

    2. if A,B,C are the points of the cucumber - z1,z2,z3 ant the angles B and C are each pie- alpha/2 then (z2-z3)^2 = 4(z3-z1)(z1-z2) sin^2 alpha/2

    Answer = 99.484759
     
  9. cool.dude123

    cool.dude123 Jr. VIP Jr. VIP Premium Member

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    what does "our heap was by 98% of water" mean? do you mean the water in the cucumber was decreased by 98%? if so then the answer would be 2.98kg, because 99% of it is water and if 98% of the water evaporated that would be 98% of 99% which is 97.02% of the total weight gone so it would be 2.98% of 100kg which is 2.98KG
     
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  10. bihguy

    bihguy Power Member

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    Maybe 2 kilograms.
     
  11. Asif WILSON Khan

    Asif WILSON Khan Executive VIP Premium Member

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    The answer is 42

    If you don't believe me Google it.
     
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  12. HelloInsomnia

    HelloInsomnia Jr. Executive VIP Jr. VIP Premium Member

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    100 kilograms (15 chars)
     
  13. lexa500

    lexa500 Registered Member

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    no again. not 99, not 2 or 3.
    you can guess it, but it is not interesting.
     
  14. philly3

    philly3 Regular Member

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    0. After everything vaporizes you have nothing left in the heap. So 0, notta, zilch, nothing.
     
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  15. lexa500

    lexa500 Registered Member

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    i meant that cucumbers consisted of water
    the water was 99% before, 98% after vaporisation
     
  16. cool.dude123

    cool.dude123 Jr. VIP Jr. VIP Premium Member

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    after reading again it makes more sense if you replace "by" with "of" so "After the water vaporised, our heap was of 98% of water." so it started with 99% water and now its 98% water.

    so work out the dry weight which would be 1% of 100kg which is 1kg. so:
    so 2% = 1kg (dry weight stays the same) making 98% = 49kg of water. so the total weight would be 50KG

    checking:
    now 98% of 50 = 49, 49 + 1kg (dry weight) = 50Kg
     
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  17. lexa500

    lexa500 Registered Member

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    correct) that was faster than i thought)
     
  18. cool.dude123

    cool.dude123 Jr. VIP Jr. VIP Premium Member

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    really? ok I have a question for you.

    if the ratio of male to female in a building is 8:12 what is the probability that when 8 are picked at random 5 are female and 3 are male?

    EDIT: I guess that was a bit harsh, but the answer is 0.27869184, or 27.869184%. the calculation is 8C5*((12/20)^5)*((8/20)^3). 8C5 is 8 choose 5, its binomial distribution.
     
    Last edited: Mar 11, 2014
  19. HelloInsomnia

    HelloInsomnia Jr. Executive VIP Jr. VIP Premium Member

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    Right here is a simple question for you:

    There are 32 ounces of water in a bottle. Jim drinks 6.5 ounces. Tiffany drinks 3.4 ounces and then spills 1.7 ounces on the floor. How much does their dog weigh?
     
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  20. OldSalt

    OldSalt Moderator Staff Member Moderator Jr. VIP Premium Member

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    I was confused like others by the line "After the water vaporised, our heap was by 98% of water. Can you calculate, what will be weight of the heap after vaporisation?". I would have phrased it, "After some of the water evaporated, the cucumbers are now 98% water. What is the current weight of the cucumbers?"

    Good on Cool.dude123 on fingering it out. ;)
     
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