Q: What is the next number in the series 1-2-4-7-11-16?

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108

3467910 is a single number: it is not a pattern!

Look at the difference between each number and the next number.

The next number is -21

The next number in the series 1 2 4 8 10 20 22 is

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59 is the next number in this series.

The next number in the series is 67.

A single number such as 61205041320 does not make a series.

A single number, such as 12848384 does not make a series.

That number as a whole is not a pattern, but when broken up into the following string of numbers, it is: 1, 2, 4, 7, 11, 16 We can test for several types of patterns if we look for what numbers can be added or subtracted at each step to result in the next number. The string above can be obtained by the following sequential additions: 0, +1, +2, +3, +4, +5 So, each number is the sum of the last number, and an incrementing digit. This makes it a series which can be defined in series notation as: a(n) = a(n-1) + n where n begins at zero. That means that any given number is equal to the previous number, plus it's position in the list. Therefore, the next number, which will be the seventh number in the list (n = 6), will be equal to 16 + 6, which is 22.

One number does not make a sequence (nor a series).

There is no series of number: just one very large number!

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