What is the largest number value (in base 10) you can write with just 3 digits?
No symbols and characters allowed.
Hints: It's not 999
Ask someone to write the largest 3-digit number and they'll respond with 999.
Logical answer, but we can go bigger.
Some may get the "power" brainwave and think of 999 (99 to the power of 9), which calculates out as 99×99×99×99×99×99×99× 99×99.
Even better is 999 (9 to the power of 99) which calculates out as 9×9×9×9×9×9×9 ... and so on 99 times.
The correct answer, however, if you extend the idea even further ends up as... 99^9(9 to the 9th power of 9).
Work out the second and third powers first (9×9×9×9×9×9×9×9×9 = 387420489). We can therefore restate the sum as 9387420489which works out as.... very very big indeed.