90% Student Fail # shorts#canyousolve

There are altogether 30 students in a class. If in a particular day 90% students attend, how many students are absent ?

In a class, 30% students fail in English, 20% students fail in Hindi and 10% students fail in both English and Hindi. A student is chosen at random, then what is the probability he fail in English, if he has failed in Hindi?

In a college, 30% students fail in physics, 25% fail in Mathematics and 10% in both. One student is choosen at random. The probability that she fails in physics, if she has failed in Mathematics is

In an examination of bank P.O., 40% students failed in Mathematics and 30% failed in English, while 20% failed in Mathematics and English both. What percentage of the students passed in both ?

In an examination ,92% of the students passed and 480 students failed.If so, how many students appeared in the examinations?