perplexus.info :: Just Math : Triangular Trial

Triangular Trial (Posted on 2010-07-20)

All the positive triangular numbers are written successively without commas or spaces resulting in this infinite string.

13610152128364555667891105120136153171..............

Determine the 2010^th digit in the above pattern.

Submitted by K Sengupta

Rating: 5.0000 (1 votes)

Solution: (Hide)

The required digit is 3.
For an explanation, refer to the solution submitted by broll in this location.

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
computer solution	Charlie	2010-07-20 13:50:02
one possible approach.	broll	2010-07-20 12:46:36

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