9 is the highest single-digit number in the decimal system in math. That is if any natural number is multiplied by 9, and the digits of the answer are repeatedly added until it is just one digit, the sum will be nine: for example- 2 × 9 = 18 (1 + 8 = 9)
Loud Study - An online educational system to help students all over the world. We are setup with the motive to educate students all over the globe free of cost.
We appreciate your comment! You can either ask a question or review our blog. Thanks!!