# Tag Archives: Concatenation

## Concatenation | x^4 * y = x || 4 || y

Older post:   Concatenation |   x^2 * y   =   x || 2 || y                                              x^4   *   y   =   x || 4 || y   Here are few solutions: 3^4   … Continue reading

## Concatenation | x^2 * y = x || 2 || y

x^2   *   y   =   x || y                    x^2   *   y   =   x || 2 || y   For example, 3^2   *   375   =   3375   … Continue reading

## Concatenation | (-x + y)^2 = x || y

To find integers N such that                          N   =   (-x + y)^2   =   x || y                          N   =   (x – y)^2   =   x || y   For example, 364^2   = … Continue reading

## Concatenation | (x + y)^2 = x || y

Older post:   Concatenation| A+B=C and A||B = C^2 where I posted some numbers that can be expressed as A   +   B   =   C   and   A || B   =   C^2 They can … Continue reading

## Pandigitals |Concatenation of semiprimes

(1) Semiprime – definition : A semiprime is a natural number that is the product of two (not necessarily distinct) prime numbers. For example, 4 = 2*2              10 = 2*5 6 = 2*3              14 = 2*7 9 = … Continue reading

## Concatenation | (x – y + z)^3 = x || y || z

Older post:   Concatenation: x||y||z = x^3 + y^3 + z^3   Find integers   x,   y   and   z   such that                                                  (x – y + z)^3   =   x || y || z                                                  … Continue reading

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## Concatenation| A+B=C and A||B = C^2

Find integers   A,   B,   C   such that                               A   +   B   =   C     and     A || B   =   C^2   For example, 88   +   … Continue reading

## Concatenation | N||(N+1) and N||(N-1) are squares

N || (N + 1)                                    =                                   … Continue reading
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