IEEE Weekly Puzzle #25 – 10 Steps

10 November 2014 Comments Off on IEEE Weekly Puzzle #25 – 10 Steps

Beginning with any number you want, you will add the larger digit of that number to itself, and then proceed to do the same with each sum in a series of steps to obtain 100 at the end.
If we want to obtain 100 in 10 steps, what number should we start from?

Example:If we want to obtain 101 in 5 steps, we should start from 64:

The Prize for This Question: Rubik’s 3×3 Cube
Send your answer to by 5:30 p.m. on November 18, or visit