Add all then divide by 7.
To find the average of all seven numbers, we first calculate the total for the first four numbers. Since their average is 15, their total is (4 \times 15 = 60). For the last three numbers, with an average of 8, their total is (3 \times 8 = 24). Therefore, the total of all seven numbers is (60 + 24 = 84), and the average of all seven numbers is ( \frac{84}{7} = 12).
12
To find the average of all seven numbers, we can use the formula for the average: (sum of all numbers) / (total number of numbers). Given that the average of the first four numbers is 15, the sum of the first four numbers is 15 * 4 = 60. Similarly, the sum of the last three numbers is 8 * 3 = 24. Therefore, the sum of all seven numbers is 60 + 24 = 84. Finally, the average of all seven numbers is 84 / 7 = 12.
first two add up to 2 x 9 = 18 last 5 add up to 5 x 16 = 80 total of all numbers = 98 Average of all seven numbers = 14
The arithmetic average of seven consecutive odd number must be the fourth number which, by definition, is odd. If the average is not the arithmetic average, then the question is ambiguous. In either case the question has no valid answer.
That depends on where you start and what direction you go. If you start at zero and count up, then the first 7 composites you run into are 4, 6, 8, 9, 10, 12, and 14. Their average is 9 .
They are 2+3+5+7+11+13+17 = 58 and 58/7 = 8 and 2/7 which is the average
The average of the remaining numbers is 38.
5
2
To find the average of a list of numbers, add the numbers and divide by the number of numbers in the list.
The average of n numbers = (sum of n numbers) / (count of n numbers).