# Identify the odd one out element

There are two columns (two sets), in each set there is a pattern among the 7 elements. The elements are not arranged in any order, the two patterns are not necessarily the same, but they are related to each other some way. In one of the columns/set one single element breaks the pattern, and this element has a logical correspondance in the other column. Identify the two elements in question. Provide the reasoning. This is one of my first puzzles of this kind.

The patterns are:

Column 1

Call the numbers a;b|c, then c = b/a x 3 3/4
In other words, the number c (the one to the right of the vertical bar) can be obtained by dividing b over a and then multiplying by 3 3/4
E.g.: 5 / 3 x 3 3/4 = 6 1/4

Column 2

Again, call the numbers a;b|c
The number c (the one to the right of the vertical bar) can be obtained by dividing b over a and then multiplying by 4 4/5
E.g.: 5 / 6 x 4 4/5 = 4

The odd ones out being:

4;3|2 11/16 in column 1 and 5;4|4 4/5 in column 2.
In both cases the factor (that is applied to the other elements) can be formed from the numbers a and b: 4;3 -> 3 3/4 and 5;4 -> 4 4/5

• this is correct
– user60738
Oct 18, 2019 at 13:57