Question

0 5 20 51 104?
What is the next number of this series?

Answer 1

185

Alternative start

with 6n-2 as difference and integrate your way up to n^3-n^2+n-1.

Answer 2

The next number of this series is 185.

Step-by-step explanation:

The given sequence are:

0, 5, 20, 51, 104, ?

To find, the value of next number(?)=

5 = 0 + 5 = 5

20 = 5 + (5 + 10) = 5 + 15 = 20

51 = 20 + (15 + 16) = 20 + 31 = 51

104 = 51 + (31 + 22) = 51 + 53 = 104

Similarly,

? = 104 + (53 + 28) = 104 + 81 = 185

Hence, the next number of this series is 185.