Challenge Prelims V1.0 – Day 42 – CSAT Paper

1. In a class, there are 3 groups A, B and C. If one of the student from group A and two students from group B are shifted to group C, then what happens to average weight of the class? (UPSC 2020)

2. What is the difference between the averages of the first 100 natural numbers and first 50 natural numbers?

3. The average weight of a class of 24 students is 36 years. When the weight of the teacher is also included, the average weight increases by 1kg. What is the weight of the teacher?

4. Ram and Shyam are among 22 students who write an examination. Ram scores 82.5. The average score of the 21 students other than Shyam is 62. The average score of all the 22 students is one more than the average score of the 21 students other than Ram. The score of Shyam is

5. In a group of 10 students, the average of the lowest 9 scores is 42 while the average of the highest 9 scores is 47. Then, for the entire group of 10 students, find the difference between the maximum possible average and the minimum possible average.