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It is 80*81/2 = 3240

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13y ago

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What is the sum of the first sixteen numbers in pi?

The sum of the first sixteen numbers of pi is 80.


What is the sum of the first 80 consecutive odd numbers?

40 * * * * * The correct answer is 6400.


What are two numbers that have a sum of -18 and a product of 80?

The numbers are: -10 and -8


What is the formula if you have the average of 3 numbers equaling 78 you need to find the 4th number to get an average of 80?

To find the 4th number needed to achieve an average of 80, first calculate the total sum of the current 3 numbers, which is (3 \times 78 = 234). For an average of 80 with 4 numbers, the total sum must be (4 \times 80 = 320). Therefore, the 4th number can be found by subtracting the sum of the first 3 numbers from the desired total: (320 - 234 = 86). Thus, the 4th number needed is 86.


The average of 5 numbers is 82 The average of 4 of the numbers is 80 what is the fifth numbers?

To find the fifth number, you can use the formula for finding the average of a set of numbers. The sum of the 5 numbers is 82 * 5 = 410. The sum of the 4 known numbers is 80 * 4 = 320. Therefore, the fifth number can be found by subtracting the sum of the 4 known numbers from the sum of all 5 numbers: 410 - 320 = 90. So, the fifth number is 90.


What is the sum of the prime numbers between 80 and 129?

929


What is the sum of the prime numbers between 80 and 90?

172


What is the sum of the prime numbers between 50 and 80?

463


What is the sum of the whole numbers from 1 through 80?

3240


What 4 numbers are multiples of 5 and their sum is 80?

25,20,5,30


The sum of 2 numbers is 80 and the difference is 14?

33 and 47


What is the sum of all prime numbers between 80 and 100?

269