5% of 25 will be- 7 | Mathematics MATHS | S CHAND | Doubtnut

5% of a number is 9. the number is

5% of which number is 12?

72% of 25 students are good in mathematics. How many are not good in mathematics?

In an examination, 25% students failed in Mathematics, 20% failed in Economics and 5% failed in both. Find the percentage of students who passed in both the subjects.

In a school 25% students are failed in Mathematics, 15% in Physics and 5% students fail in both Mathematics and Physics. A student is selected at random. (i) If he is fail in Physics, find the probability that he is fail in Mathematics. (ii) If he is fail in Mathematics, find the probability that he in fail in Physics. (iii) Find the probability that he is fail either in Mathematics or in Physics.

5% of a number is 9. Number is