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

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

There are 4 students for physics, 6 students for chemistry and 7 students of mathematics gold medal. In how many ways one of these gold medals be awarded?

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.

In a test. 90% of the students passed and 4 students failed. How many students appeared for the test?

in a class of 35 students , 17 have taken Mathematics , 10 have taken mathematics but not economics if each student has taken erither mathematics Of Economics or both , then the number of students who have taken Economics but not mathematics is

The scores in mathematics test (out of 25) of 15 students are as follows: Find the mode and median of this data. Are they same?

Rajdhani College has 2400 students, 40% of whom are girls. How many boys are there in the college?

The historgam below represents the scores obtained by 25 students in a Mathematics mental test. Use the data to : (ii) to calculate mean.

The historgam below represents the scores obtained by 25 students in a Mathematics mental test. Use the data to : (iii) To determine the Modal class.

In an examination, 8% of the students fail. What percentage of the students pass? If 1650 students appeared in the examination, how many passed?