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Triple 8 (Posted on 2013-01-08) Difficulty: 2 of 5
What is the smallest power of 2 that ends in 888?

See The Solution Submitted by Math Man    
Rating: 3.0000 (1 votes)

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Solution Generalisation | Comment 1 of 9

2^(100n-61) has the desired property for positive integer n.

Finding  2^n ending in 8888 is a bit more of a challenge...

 

Edited on January 8, 2013, 10:22 am
  Posted by broll on 2013-01-08 10:20:22

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