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Logic & Pattern Challenge Sheet
Logic & Pattern Challenge Sheet
4 deductive logic puzzles and 8 number/pattern sequences. Each puzzle includes working space, clues, and an answer key. Best for ages 9–14. Works as a weekly challenge or classroom warm-up.
How to use this sheet
Logic Puzzles (Part 1)
Read each puzzle, work through the clues one by one. Write your reasoning in the space provided — the method matters more than the answer.
Pattern Sequences (Part 2)
Find the rule before finding the next number. Write the rule in the space — a correct rule with a wrong answer is better than a lucky guess.
Part 1 — Logic Deduction Puzzles
Anu, Bala, and Chandra each have exactly one pet. The pets are a cat, a dog, and a fish.
Clues
- →Anu does not have the dog.
- →Bala does not have the cat.
- →Chandra has the fish.
Who has which pet?
Working space
Answer (check after solving)
Anu has the cat. Bala has the dog. Chandra has the fish.
One coin is hidden inside exactly one of four boxes: Red, Blue, Green, and Yellow.
Clues
- →The coin is not in the Red box.
- →The coin is not in the Blue box.
- →The coin is not in the Yellow box.
Which box contains the coin?
Working space
Answer (check after solving)
The coin is in the Green box — it is the only one not ruled out.
Five children — Priya, Rajan, Sona, Tamil, and Uma — sit in a single row (seats 1 to 5).
Clues
- →Priya sits in seat 3.
- →Rajan sits next to Priya.
- →Uma sits at one of the two ends.
- →Sona sits between Tamil and Uma.
Who sits in seat 5?
Working space
Answer (check after solving)
Priya is seat 3. Rajan is seat 2 or 4. Uma is seat 1 or 5. Sona sits between Tamil and Uma. If Uma is seat 5, Sona is seat 4 and Tamil is seat 3 (blocked by Priya). So Uma is seat 1, Tamil is seat 2, Sona is seat ... wait — re-try: Uma=seat 1, Sona=seat 2, Tamil would be seat... The answer: Uma is seat 5, with Sona in seat 4 and Tamil in seat... Rajan takes seat 4 (next to Priya), so Sona=seat 5 is blocked. Uma is in seat 1, Sona is seat 2 (between Uma and Tamil), Tamil is seat... Seat 5 is Rajan (seat 2 or 4, taking 4) and Tamil takes seat 5. Tamil sits in seat 5.
Three children each wear a hat. The hats are Red, Blue, and Green. Each child can see the others' hats but not their own.
Clues
- →Child A says: 'I cannot tell what colour my hat is.'
- →Child B says: 'I cannot tell either.'
- →Child C says: 'I now know exactly what colour my hat is.'
What does Child C's answer tell us? What colour is Child C's hat?
Working space
Answer (check after solving)
Child C used the other children's uncertainty as information. If two children wore the same colour, the third would know immediately. Since A and B were unsure, all three hats must be different colours. Child C deduced this and identified the remaining colour. (Any colour is possible — the logic puzzle shows HOW C reasoned, not WHICH colour.)
Part 2 — Pattern Sequences
Challenge yourself further
Can you write your own 4-step pattern sequence for a friend to solve? The rule must work for every step — not just the first two.
தர்க்க சிந்தனை — உன் மூளையை கூர் தீட்டு
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