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 =3/5
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 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 ?
There are 5 switches in a board. In these 5 switches 1 is attached with the fan. A person has to start the fan in 2 attempts only. What will be the probability of success?
People are waiting in line to board a 100-seat airplane. Soham is the first person in the line. He gets on the plane but suddenly can’t remember what his seat number is, so he picks a seat at random. After that, each person who gets on the plane sits in their assigned seat if it’s available, otherwise they will choose an open seat at random to sit in.
The flight is full and you are last in line. What is the probability that you get to sit in your assigned seat?
There are 7 pair of shoes. The colour of all the pairs are different. There is dark in the room. What will be the probability to get a complete pair? Left and right leg shoes can be differentiated.
