1 A pupil's marks were wrongly entered as 83 instead of 63. Due to that the average marks for the class got increased by half. The number of pupils in the class is :   1 40 2 45 3 30 4 38   Answer: Option1

2 What is the average of four tenths and five thousandths   1 25002 2 2502 3 0.2025 4 none   Answer: Option3

3 The average of 7 consecutive numbers is 20. The largest of these numbers is :   1 25 2 28 3 22 4 23   Answer: Option4

4 The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.4 years, The ratio of the number of boys to the number of girls in the class is :   1 4 : 5 2 2 : 3 3 1 : 2 4 3 : 4   Answer: Option2

5 A student was asked to find the arithmetic mean of the numbers 3, 11, 7, 9, 15, 13, 8, 19, 17, 21, 14 and x. He found the mean to be 12. What should be the number in place of x ?   1 8 2 13 3 11 4 7   Answer: Option4

6 Out of 9 persons, 8 persons spent Rs. 30 each for their meals. The ninth one spent Rs. 20 more than the average expenditure of all the nine. The total money spent by all of them was :   1 Rs. 298.50 2 Rs. 298 3 Rs. 297.50 4 Rs. 292.50   Answer: Option4

7 The average price of three items of furniture is Rs. 15000. If their prices are in the ratio 3:5:7, the price of the cheapest item is :   1 9000 2 6000 3 7000 4 8888   Answer: Option1

8 The average salary of all the workers in a workshop is Rs. 8000. The average salary of 7 technicians is Rs. 12000 and the average salary of the rest is Rs. 6000. The total number of workers in the workshop is :   1 24 2 21 3 28 4 26   Answer: Option2

9 The average age of a group of persons going for picnic is 16 years. Twenty new persons with an average age of 15 years join the group on the spot due to which their average age becomes 15.5 years. The number of persons initially going for picnic is :   1 15 2 20 3 23 4 24   Answer: Option2

10 If the arithmetic mean of seventy-five numbers is calculated, it is 35. if each number is increased by 5, then mean of new numbers is :   1 40 2 30 3 50 4 60   Answer: Option1