# Tag Archives: 1111

## Make 1111 using (+, -, *, /, ^) and digits 1-9 only once

Make 1111 using (+, -, *, /) and exponentiation using only one digit from 1 to 9 each time. For example, (6 + 6^6)/(6 + 6*6)   =   1111 the digit 6 is repeated only six times.   … Continue reading

## Cubes that end with 1,11,111,1111,11111,…

Pattern: 7368288471      368288471       68288471          8288471             288471               88471                  8471                     471                        71                           1   To obtain single digit 1 at the end of a cube, I write 10*y   +   … Continue reading

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## Repunit | 11,111,1111,11111,…. in other bases

repunit consisting of n 1’s in base n for example, the repunit consisting of two 1s’ in base 2, and repunit of three 1s’ in base 3, and so on. base n                 base-10 11   base-2   = … Continue reading

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## Patterns | 11, 1111, 111111, …

Note the pattern: 11   =   (1 * 9)   +   2 1111   =   (123 * 9)   +   4 111111   =   (12345 * 9)   +   6 11111111   = … Continue reading