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sravani: a point is selected at random inside the circle. find the probability that the point is closer to the centre of the circle than to its circumference
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  • October 16, 2014 at 7:19am
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  • Lee McKing:you can! there is the blue button below on the left that allows you to type formulae such as [deqn]\gg\chi\epsilon\varepsilon\Delta\pi\alpha\beta\int_{a}^{b}\sum_{a}^{b}[/deqn] etc etc
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    • October 17, 2014 at 10:59am
  • sravani:how many dice must be thrown so that there is better than even chances of getting a 6
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    • October 18, 2014 at 9:03am
  • Lee McKing:well assuming you are asking that the total sum is 6, then 1 die is enough cause the probability is 1/6 or 0.16667 using 2 dice onwards will reduce the probability, 5/36 is 0.13889 and using 3 dice is 10/216 or 0.0463
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    • October 18, 2014 at 9:12am
  • sravani:they have given options as 4,5,6,7
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    • October 18, 2014 at 9:18am
  • Lee McKing:ohh... the question is actually asking how many dice is needed so that a 6, any 6, on any dice, appears. ok hold on...
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    • October 18, 2014 at 9:21am
  • Lee McKing:a better than even chance mean more than 50%? then its just 4 dice haha
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    • October 18, 2014 at 9:26am
  • Benjamin:sravani just ask your teacher
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    • October 18, 2014 at 11:48am
  • sravani:here is the one more question, A jar has 5 marbles, one of each of the colours red,white,blue,green,and yellow. if 4 marbles are removed from the jar, what is the probability that the yellow one is removed
    • 0 like
    • October 28, 2014 at 10:40am
  • Lee McKing:4/5 cause its 1/5 that the yellow is not removed
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    • October 28, 2014 at 10:48am
  • sravani:A and B play a game in which they toss a fair coin three times. the one obtaining heads first wins the game.if A tosses the coin first and if the total value of the stakes is Rs.20. how much should be contributed by B in order that the game is fair
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    • October 28, 2014 at 10:54am
  • Lee McKing:sorry... a fair coin is 50% head or tail, if A goes first, there is a higher chance that he will win first. The only thing I can think of is that B pays Rs 20. But I don't know if that is really the answer... sorry...
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    • October 28, 2014 at 10:57am
  • sravani:i dont know how but the answer is Rs 7.50. i want formulas for median, mode,standard deviation
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    • October 28, 2014 at 11:06am
  • Lee McKing:ahh... then i am not able to answer this question then, sorry
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    • October 28, 2014 at 11:35am
  • sravani:can u tell me what is function of analog multiplier in companding
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    • November 2, 2014 at 8:25am
  • Lee McKing:no idea, i never learnt it. sorry :\
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    • November 2, 2014 at 8:56am
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