Patterns & Series

Number Series

Write the difference under each pair, the rule reveals itself.

Letter Series

A=1 … Z=26. Find the jump, add it, convert back.

Mixed Series

Letters follow one rule, numbers another. Solve them apart.

Figure Series

A steady gap multiplies the figure number; figure 1 pins the rest.

Shape Series

Split the features, use remainders, then find where both land home.

Machine Rules

Undo the LAST step first, then check by running it forwards.