Length 2:15Crack the Positional Code
Decode a letter-word code
11+ Verbal Reasoning · Code
A short worked example (2:19) for one 11+ verbal reasoning skill: Apply a number code rule.
This video shows how to apply an arithmetic rule to decode letters or numbers in a code. Watch an 11+ verbal reasoning question solved step by step.
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One tiny number can disguise a whole word. The trick is not guessing the hidden word... it is making the SAME move every single time. Can you keep the rule steady when the alphabet runs out?
Picture the alphabet as a numbered track from A to Z. A number code tells you how far, and which way, to move. If the rule is plus three, start on each letter and count three steps forwards. Watch C travel: D is one, E is two, F is three. So C becomes F. Now reset to the next original letter. Do not keep counting from F. One invariant rule means every symbol gets exactly the same operation. Here is the sneaky edge. After Z, wrap back to A, just as a circular track returns to its start. Never stop at Z. With plus three, X moves to Y, then Z, then A, so X becomes A.
Let's work through an example. In a code, each letter moves forward three places in the alphabet. What is the code for X A T? Keep the letters in that exact order, and apply plus three to each one. Start with X. Count visibly: Y, one; Z, two; A, three. The alphabet has wrapped around, so write A in the first code box. That is not breaking the rule - it is finishing all three steps. Next comes A. B is one, C is two, D is three, so the second code letter is D. Finally, start again at T. U is one, V is two, W is three, so the last code letter is W. Read the boxes from left to right: A, D, W. Therefore, the code for X A T is A D W. Check it: three forward moves for every letter, with wrap-around where needed. Answer: A D W.
Remember: read the rule, reset at each original symbol, and complete every step. If you pass Z, wrap to A and keep counting. Stay consistent, check the order... and you have cracked the code!
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Length 2:15Decode a letter-word code
Length 2:26Follow alternating code rules
Length 2:16Apply a letter shift
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