A. 18
B. 22
C. 9
D. 11
✅ The correct answer is option D. 11.
Average Mcqs MCQs
The average of first 10 odd numbers is_____________?
A. 11
B. 10
C. 12
D. 17
✅ The correct answer is option B. 10.
Sum of 10 odd no. = 100
Sum of 10 odd no. = 100
The average age of 15 students of a class is 15 years. Out of these, the average age of 5 students is 14 years and that of the other 9 students is 16 years. The age of the 15th student is____________?
A. 11 years
B. 14 years
C. 15 years
D. 15 2/7 years
✅ The correct answer is option A. 11 years.
The arithmetic mean of the scores of a group of students in a test was 52. The brightest 20% of them secured a mean score of 80 and the dullest 25% a mean score of 31. The mean score of remaining 55% is___________?
A. 45
B. 50
C. 51.4 approx.
D. 54.6 approx.
✅ The correct answer is option C. 51.4 approx..
In an examination a pupil’s average marks were 63 per paper. If he had obtained 20 more marks for his Geography paper and 2 more marks for his History paper, his average per paper would have been 65. How many papers were there in the examination?
A. 8
B. 9
C. 10
D. 11
✅ The correct answer is option D. 11.
Let the number of papers be x. Then,
Let the number of papers be x. Then,