# Tag Archives: Digits 1 to 9

## Digits from 1 to 9 : A^(B/C) + D^(E/F) + G^(H/I) is a palindrome

Can you find other palindromes?   Paul found:

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## Digits from 1 to 9 : A^(B/C) + D^(E/F) + G^(H/I) is a prime number

Paul found:

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## Puzzle| Use All digits 1 to 9 to form distinct prime numbers

Posted in Number Puzzles | Tagged , | 6 Comments

## 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

## All digits 1 to 9 only once | Magic square

a          b          c                                                        d          e           f                                                        g          h           i     … Continue reading

## All digits 1 to 9 only once | (a – b)^x + (c – d)^y + (e – f)^z = 0

(a – b)^x   +   (c – d)^y   +   (e – f)^z   =   0   a, b, c, x, d, y, e, f , z   represent all digits from   1   … Continue reading

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## Product | Use the digits 1 to 9 exactly once

Goal:   To use all digits from   1 to 9                        de                  a        b                      c fg                               hi where each of 9 the letters (a, b, c, d, e, f, g, h, i) represents … Continue reading

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## Concatenation | N = M || M

Goal:   To assign a different digit from   1   to   9   to each of the letters in the following expression to produce concatenation of a number m with itself: that is,      N   =   … Continue reading

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## Palindromes and Repdigits | using all digits 1-9 only once — Part 2

Goal:   To assign a different digit from   1   to   9   to each of the letters in the following expression to produce repdigits and palindromes:                                      (u – v) (r + s) * t   + … Continue reading

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## Primes | using all digits 1-9 only once — Part 1

Goal:   To assign a different digit from   1   to   9   to each of the letters in the following expression to produce prime numbers:                                      (u – v) (r + s) * t   +   … Continue reading

Posted in Number Puzzles | Tagged , | 4 Comments