Riddle:
How many pluses should we put between the digits of 987,654,321 to get a total of 99, and where?
Show Hint
Hint:
There are two ways to do this, with 6 numbers or 7.
Show Answer
Answer:
There are 2 ways, with 6 numbers or 7:
Six: 9 + 8 + 7 + 6 + 5 + 43 + 21 = 99
Seven: 9 + 8 + 7 +
65 + 4 + 3 + 2 + 1 = 99