How is the probability `1/5` written in percentage?

How is the probability 25% written as fraction?

In a class, 40% of students study maths and science and 60 % of student study maths. What is the probability of a student studying science given the student is already studying maths?

A signal which can be green or red with probability 4/5 and 1/5 respectively, is received by station A and then and 3 transmitted to station B. The probability of each station receiving the signal correctly is 3/4 If the signal received at station B is green, then the probability that the original signal was green is

It is know that 10% of certain articles manufactured are defective.What is the probability that in a random sample of 12 such articles,9 are defective?

If the letters of the word PROBABILITY are written down at random in a row, the probability that two B-s are retogether is

The thickness of a glass sheet is measured at six different places and the following readings are obtained : 1.21 mm, 1.24 mm, 1.19 mm, 1.15 mm, 1.22 mm, 1.25 mm. Find the most probable value of the thickness and percentage error in measurement.

A company produces 10,000 items per day. On a particular day 2500 items were produced on machine A, 3500 on machine B and 4000 on machine C. The probability that an item produced by the machines. A, B, C to be defective is respectively 2%, 3% and 5 %. If one item is selected at random from the output and is found to be defective, then the probability that it was produced by machine C, is