In a lottery, there are 10 prizes and 20 blanks. A lottery is drawn at random , what is the probability of getting prize?

A)none
b)1/3
c)3/2
d)1/2
e)2/3

• 10/30 = 1/3
• 10 years agoHelpfull: Yes(4) No(0)
• no, of events of prize=10
  total no, of samples = prize + blanks = 10+20=30
  probability=no of events/no. of samples= 10/30= 1/3
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• 10= FABOURABLE
  30=TOTAL CASES
  B)1/3
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• sample space=30
  prize=10
  30/10=1/3
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• total (10+20)=30 tickets..out of those 10 can get prizes..so the probablity is 10/30=1/3
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• d
  probability=no.of favourable chances/total no.of chances
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• b)1/3 . total samples=30. we can get prize so probability is 10/30=1/3
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• number of events=30
  probablity of events=10
  so,n=10/30=1/3
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• number of events=30
  probablity of events=10
  so,n=10/30=1/3
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• number of events=30
  probablity of events=10
  so,n=10/30=1/3
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• Ans. is option (B) . Because total number of outcomes are 10+20=30, and favorable outcome is 10, so
  p(E)=10/30= 1/3.
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• option b)
  total lot=30
  prize=(10/30)=1/3
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• no.of chances/total no.of chances
  =>10/30=1/3
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• b) 1/3
  10/(10+20)=1/3
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• (b) 1/3
  because, 10/(10+20)=10/30=1/3
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• 10/30 = 1/3 so ans is B
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• 10 prizes 1
  ---------------------------- = -----
  10prizes+20 blanks 3
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• its 1/3,10/10+20
  
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• b)
  total no of lottery =30
  favourable outcome=10
  probability=no.of favourable out come/ total no. of out come
  i.e=1/3
  
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• d)1/2
  because p=10/20=1/2
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• 1/3
  .As there are 10 prizes and 20 blanks then in toatal there are 30 lotteries. The probability of getting lottery is 10/30 i.e, 1/3
  
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• ans;10/30=1/3
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• 1/3
  because there 10 prizes of 30 tickets
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