HardMath and Logic
Sum of digits from 1 to 1,000,000?
Riddle
Sum of digits from 1 to 1,000,000?
Choose an answer
A.5,000,000
B.1,000,000
C.45,000,000
D.27000001
Hint: It's a word with 0 letters, starting with "2".
Answer
27000001
Why this is the answer
The sum for 0-999,999 is (sum of digits 0-9) * (number of positions) * (frequency). 45 * 6 * 100,000 = 27,000,000. Add 1 for the '1' in 1,000,000.
This riddle is filed under Expert Riddles for Adults and rated Hard.
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