Round 6

Date Released: April 25th, 2001.
Date Rewarded: May 1st, 2001.



If you wrote all of the numbers from 300 to 400 on a piece of paper, how many times would you have written the number 3?

Prize
Unknown

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There are 100 numbers from 300 to 399. Each one has a number 3 in the 1st digit. (hundreds place)
There are 10 numbers from 330 to 339. Each one has a number 3 in the 2nd digit. (tens place)
There are 10 numbers that has a number 3 in the last digit (ones place) i.e. 303, 313, 323 ... 393.

Therefore, there are totally 120 times of number 3 from number 300 to number 400.