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.
5 pairs of two ball (1 white and 1 red) are available. We have to select 1 white and 1 red ball.
What will be the probability to select both the balls of same pair?
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 ?
What will be the probability to form word NOTEBOOK by using letters B,E,K,N,O,O,O and T.
If you have to make arrangement of E,N,O and T first, after then you have to arrange B,K,O and O.
Three ladies get together for a bit of fun. When they arrive they all kick off their shoes. Unfortunately, when they leave they are not quite in the same frame of mind so they each grab a left shoe and a right shoe at random, and put them on.
What is the probability that when they leave that none of them is wearing either of their own shoes?
A speaks truth in 70% cases and B in 80% cases. What will be the probability that they will contradict each other in describing a single event?