Question

number series11 13 23 53 ? 251

Answer 1

Answer:

Step-by-step explanation:

13 - 11 = 2 => 1^3 + 1

23 - 13 = 10 => 2^3 + 2

53 - 23 = 30 => 3^3 + 3

So, 53 + (4^3 + 4) = 53 + 64 + 4 = 121.

251 - 121 = 130 = 5^3 + 5 .

Therefore, the missing number is 121.