Question

9 is 9 and 99999, USA and 9 at 9899 and9 9999 and is 9 and 9 of 9 hotels 9 years old 9999 and 9 at 9pm 9 years 9 months ago 9 years 99 months 999 million 999 million 99999,99999999 USA and 99 minutes 0999999​

Answer 1

Answer:

sorry I don't know

Step-by-step explanation:

mark me as branliest

Answer 2

Answer:

The arithmetic mean of the nine numbers in the set $\{9, 99, 999, 9999, \ldots, 999999999\ is a $9$ -digit number $M$ , all of whose digits ...