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A student get 450 marks out of 500 marks in an exam having subject Hindi, Mathematics, Physics, Chemistry and English. For qualifying an exam of Science his score should be 90% in 3 subjects Physics, Chemistry and Mathematics.
What will be the probability to get his success in that exam ?
Number of combinations for Physics, Chemistry and Mathematics are
(5*4*3*2*1)/(3*2*1*2*1) = 10
Out of 10 combinations non-qualifying combination are
(82,85,93), (82,85,94), (82,85,96) and (82,93,94)
So possibility to get his success = 6/10
A 3 digit number is such that 2 digits of the number are 1 and 2.
What is the probability that we would get success in our one trail to guess the number ?
A student gets 450 marks out of 500 in an exam having subject Hindi, Mathematics, Physics, Chemistry and English. For qualifying an exam of science his score should be 90% in 3 subjects Physics, Chemistry and Mathematics.
What is the Probability to get his success in the exam?
A non negative number having all distinct digits is such that the product of all digits of the number is 504.
What will be the probability that the number has sum of all its digits 25 ?
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