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A Self-Terminating Sequence (Posted on 2015-01-29) Difficulty: 3 of 5
Start with an integer n. Multiply its smallest and largest digits together and add their product to n, forming the second term in the sequence. Repeat this process until n stops changing.

Example: 231, 234, 242, 250, 250. This is a 4-term sequence.

What is the longest sequence for starting values less than 30,000?

No Solution Yet Submitted by Danish Ahmed Khan    
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  Subject Author Date
Solutioncomputer solutionCharlie2015-01-29 14:41:58
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