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Any set of numbers that you choose can be the next number. It is easy to find a rule based on a polynomial of order 6 such that the first six numbers are as listed in the question followed by your chosen next number. A polynomial of order 9 will fit the above six and any three following numbers. There are also non-polynomial solutions. Short of reading the mind of the person who posed the question, there is no way of determining which of the infinitely many solutions is the "correct" one.

The simplest solution here, besed on a polynomial of order 5 is:

U(n) = (221*n^5 - 3845*n^4 + 24725*n^3 - 72055*n^2 + 94994*n - 41760)/120 for n = 1, 2, 3, ...

and, accordingly,

U(7) = 464,

U(8) = 2154 and

U(9) = 6867.

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Any three number that you choose can be the next three numbers. It is easy to find a rule based on a polynomial of order 9 such that the first six numbers are as listed in the question followed by the chosen three numbers. There are also non-polynomial solutions. Short of reading the mind of the person who posed the question, there is no way of determining which of the infinitely many solutions is the "correct" one.

The simplest polynomial solution is

U(n) = (221*n^5 - 3845*n^4 + 24725*n^3 - 72055*n^2 + 94994*n - 41760)/120 for n = 1, 2, 3, ...and, accordingly, the next three numbers are: 464, 2154 and 6867. Check it out!

Q: What are the next three numbers 19 28 38 81 83 85?

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Three consecutive numbers whose sum is 84 are 27, 28 and 29 AND 26, 28 and 30.

28

2*2*7 = 28

To find the mean of a set of numbers, you add up all the numbers and then divide the sum by the total count of numbers. Therefore, the mean of 19, 20, 24, 28, and 29 is (19 + 20 + 24 + 28 + 29) / 5 = 24.

The prime numbers between 13 and 28 are 13 17 19 23 Multiples of 7 in that range include 14, 21 and 28.

Related questions

The three composite numbers are 28, 30 and 32. Their sum is 90.

The next number in the progression is 43 - the sequence continues to increase by ascending odd numbers.

Three consecutive numbers whose sum is 84 are 27, 28 and 29 AND 26, 28 and 30.

The numbers 19 and 23 are prime.

28

2*2*7 = 28

To find the mean of a set of numbers, you add up all the numbers and then divide the sum by the total count of numbers. Therefore, the mean of 19, 20, 24, 28, and 29 is (19 + 20 + 24 + 28 + 29) / 5 = 24.

The prime numbers from 1 to 28 are 2, 3, 5, 7, 11, 13, 17, 19, and 23.

The prime numbers between 13 and 28 are 13 17 19 23 Multiples of 7 in that range include 14, 21 and 28.

All three are numbers.

2,3 and 28

As a product of its prime factors: 2*2*7 = 28