The probability of a student solving a problem correctly is 0.6. Out of 10 independent attempts, what is the probability that he solves at least 8 ?
- The average weight of 6 students in a group is 45 kg. If one student is replaced by person 'B', the average weight of the group increases by 5%. Find the d...
A mixture contains milk and water in the ratio 7:5. If 6 liters of water is added to the mixture, the ratio of milk to water becomes 7:6. Find the origi...
In a school, Boys are 60% of total students. 50% Boys students failed. Total 55% of students in school fail. employees in the company are working for mo...
A train travels at 72 km/h and crosses a platform of length 150 meters in 30 seconds. Find the length of the train.
Find the area of triangle formed by the points A(1, 2), B(4, 6), and C(5, 2).
The sum of the ages of a father and his son is 50 years. Five years ago, the father's age was four times that of his son. What are their current ages? ...
Pipe X can fill a tank on its own in 12 hours, while Pipe Y can fill the same tank individually in 20 hours. Both pipes X and Y o...
If 15 men can complete a work in 24 days, how many days will it take 10 men to complete the same work?
The number of students in class A is 25% more than the number of students in class B and the number of students in C is 20% more than the number of stud...
