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Any number that you choose can be the next number. It is easy to find a rule based on a polynomial of order 5 such that the first five numbers are as listed in the question followed by the chosen next number. 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.
In this case the simplest solution, based on a polynomial of order 4 is
t(n) = (-77*n^4 + 874*n^3 - 3400*n^2 + 5321*n - 2676)/6 for n = 1, 2, 3, ... and accordingly, the next number is 693.
What else can I help you with?
What number comes next in this series 3 618 72?
The next number in the series 3, 618, 72, is -1635. The relevant rule is Un = (-1161n2 + 4713n - 3546)/2 for n = 1, 2, 3, ...
What number comes next in the series 3-6-18-72?
Each number in the series is being multiplied by (2 + (n-1)) where n = the term in the series 3 x 2 = 6 6 x 3 = 18 18 * 4 = 72 72 x 5 = 360
What number comes next in the series 3-6 -18 -72?
360 each number is multipled by (2 + the preceding term number) 3 x 2 = 6 6 x 3 = 18 18 x 4 = 72 72 x 5 = 360
What number can go in 72 and 21?
3 can go into both these numbers 72/3= 24 21/3= 7
What number comes next 8679 and 72?
65
What is the next number in the series 243 162 108 72 48 32?
If you look at this series, you can see that each number is 2/3 of the one before it. The next number then is 2/3 * 32, which equals 64/3, or 21 1/3.
What is the next number 7 218 72 9?
7, 21, 8, 72, 9, ?
What is the next number is this series 52 27 33 72?
25
What is next number in the series 243 162 108 72 48?
32
What number comes next in this series 3 618 72?
The next number in the series 3, 618, 72, is -1635. The relevant rule is Un = (-1161n2 + 4713n - 3546)/2 for n = 1, 2, 3, ...
What is the next number in this series 18 24 30 48 72 96?
132
What should the next number be 7 21 8 72 9?
243 is one possibility.
Which number comes next in this series 18 81 27 72 36 63?
45 54
What number comes next in the series 3-6-18-72?
Each number in the series is being multiplied by (2 + (n-1)) where n = the term in the series 3 x 2 = 6 6 x 3 = 18 18 * 4 = 72 72 x 5 = 360
What number comes next in the series 3 6 18 72?
3 * 2 = 6 * 3= 18 *4 =72 *5 = 360
What is the next number in the series 32 48 72 108 162 243?
364.5 Each time, you're adding half of the previous number.
What is next in the series 5 20 24?
could be 72
