Question

9,10,11,15,33,129,? Math reasoning

Answer 1

Answer:

9,10,11,15,33,129,729

Step-by-step explanation:

We know that 1! = 1, 2! = 2, 3! = 6 , 4! = 24, 5! = 120, and 6! = 720

1st number = 9

2nd number = 1! + 9 = 1 + 9 =10

3rd number  = 2! + 9 = 2 +9 = 11

4th number = 3! + 9 = 6 + 9 = 15

5th number = 4! + 9 = 24 + 9 = 33

6th number = 5! + 9 = 120 +9 = 129

then

7th number = 6! + 9 = 720 + 9 = 729