This collection features logical reasoning, missing number puzzles built around a four-square grid. In each puzzle, every square displays five digits that are connected by a consistent mathematical or logical rule. One square has a missing number; your job is to decode the hidden relationship among the digits across the squares and apply it to determine the missing value.
1. Crack the Code: Logical Missing Number Puzzle
12 The Logical Reasoning used in this Maths Riddle is E=A+B+C-D
What makes these reasoning puzzles engaging is the variety of plausible rules—addition chains, alternating operations, positional weights, row/column interactions, or digit properties (prime/composite, parity, sums of digits). You’ll practice systematic elimination, build stronger numerical intuition, and connect ideas you may already use in maths riddles, sudoku logic, and analytical brain teasers.
You’ll solve 5 puzzle challenges, each followed by a hidden answer and concise explanation placed immediately after the image. Please refer to the solution notation image to understand how each answer is presented and follow the logic step by step. After the main set, try the extra challenge and share your full reasoning in the comments.
2. Crack the Code: Logical Missing Number Puzzle
13 The Logical Reasoning used in this Maths Riddle is E = AB-CD
3. Crack the Code: Logical Missing Number Puzzle
9 The Logical Reasoning used in this Maths Riddle is E = (A/B)+(C/D)
4. Crack the Code: Logical Missing Number Puzzle
26 The Logical Reasoning used in this Maths Riddle is E = (AxC)+(BxD)
5. Crack the Code: Logical Missing Number Puzzle
14 The Logical Reasoning used in this Maths Riddle is E=A^2-B-C-D
Crack the Code: Logical Missing Number Bonus Puzzle
16 The Logical Reasoning used in this Maths Riddle is E=A+B+C+D
Logical Missing Number Puzzle Notations for Solution
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