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Q: What is next number in series 60-30-20-15-12?

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How about 10 which is also a factor of 60

59 is the next number in this series.

The next number in the series is 13112221.

There is no series: one number, however large, does not make a series.

The next number in the series is 67.

hat is the next number in the series: 60 30 20 15 12

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

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

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

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

10

8

243

20

73791170

108

108

25

15

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

The next number is -57

The next number is 1112.

The sum of the previous two numbers in the series.

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

The next number in the series is 65. You'll notice that each succeeding number gets a progressive multiple of 3 added to the previous number in the series. The first number is 2, and the next number 5 is 2+(3x1). The next number 11 is 5+(3x2), and so forth. To obtain the number following 47, we simply add to 47 the 6th multiple of 3 (because 47 is the sixth number in the series), that is, 47+(3x6) = 65.