Question : The average of 11 numbers is 7. If every number is doubled, what will be the new average of the numbers?

Option 1: 3.5

Option 2: 7

Option 3: 10.5

Option 4: 14

Question : The average of the first three numbers is double the fourth number. If the average of all the four numbers is 12. Find the 4th number.

Option 1: $16$

Option 2: $\frac{48}{7}$

Option 3: $20$

Option 4: $\frac{18}{7}$

Question : The arithmetic mean of the following numbers
1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7 is:

Option 1: 4

Option 2: 5

Option 3: 14

Option 4: 20

Question : The average of 15 numbers is 7. If the average of the first 8 numbers is 6.5 and the average of the last 8 numbers is 8.5, then the middle number is:

Option 1: 10

Option 2: 23

Option 3: 13

Option 4: 15

Question : The average of three consecutive even numbers is A. If the next five even numbers are added, what is the average of these eight numbers?

Option 1: A + 3

Option 2: A + 4

Option 3: A + 5

Option 4: A + 7

Question : The average of two numbers is 8, and the average of the other three numbers is 3. The average of the five numbers is:

Option 1: 2

Option 2: 3

Option 3: 5

Option 4: 6