Question : The average of 8 numbers is 21. If each of the numbers is multiplied by 8, the average of the new set of numbers is:

Option 1: 21

Option 2: 29

Option 3: 8

Option 4: 168

Question : The average of nine consecutive numbers is $n$, if the next two numbers are also included the new average will be:

Option 1: increase by 2

Option 2: remain the same

Option 3: increase by 1.5

Option 4: increase by 1

Question : Three numbers are such that the average of the first two numbers is 2, the average of the last two numbers is 3 and the average of the first and the last numbers is 4. What is the average of the three numbers?

Option 1: 2

Option 2: 3.5

Option 3: 3

Option 4: 2.5

Question : If the sum of squares of two real numbers is 12 and the product of the numbers is 4, find the difference between the numbers.

Option 1: 4

Option 2: 8

Option 3: 1

Option 4: 2

Question : Three numbers are such that the average of the first two numbers is 2, the average of the last two numbers is 3 and the average of the first and last number is 4, then the average of the three numbers is equal to:

Option 1: 2

Option 2: 3.5

Option 3: 3

Option 4: 2.5