Logic Puzzles for 7 Year Olds: 20 Brain Teasers with Answers
Logic is a muscle you can train. Here are 20 puzzles for 7-year-olds — from simple patterns to clever brain teasers, all with answers.
Why logic puzzles matter
Logic puzzles develop what regular math problems don't: reasoning skills, pattern recognition, hypothesis testing. These abilities form the foundation not just of mathematics, but of coding, science, and simply thinking well.
Pattern puzzles
Puzzles 1–5: Continue the sequence
1) 2, 4, 6, 8, ... (Answer: 10 — even numbers)
2) 1, 3, 5, 7, ... (Answer: 9 — odd numbers)
3) 5, 10, 15, 20, ... (Answer: 25 — counting by fives)
4) 1, 2, 4, 8, ... (Answer: 16 — each number doubles)
5) 10, 9, 8, 7, ... (Answer: 6 — counting backwards)
Brain teasers
Puzzle 6 — The apples
There were 5 apples on the table. One was cut in half. How many apples are on the table?
Answer: 5 — a cut apple is still an apple.
Puzzle 7 — The cats
A room has 4 corners. In each corner sits a cat. Across from each cat sit 3 cats. How many cats total?
Answer: 4 — each cat simply sees the other three.
Puzzle 8 — The stairs
Mia lives on the 4th floor and climbs 3 flights of stairs to get home. How many flights does Leo climb if he lives on the 2nd floor?
Answer: 1 flight (flights are always one fewer than floors).
Puzzle 9 — Brothers and sisters
Tanya has 2 brothers and 1 sister. How many children in the family?
Answer: 4 — two brothers, one sister, and Tanya herself.
Puzzle 10 — The candles
7 candles were burning. 2 went out. How many candles will remain?
Answer: 2 — the others will burn down completely; the extinguished ones remain.
True or false
Puzzles 11–15
11) All birds can fly. (False — penguins and ostriches can't)
12) Tuesday always comes after Monday. (True)
13) If a number is bigger than 5, it's bigger than 3. (True)
14) All cats have 5 legs. (False — 4 legs)
15) Zero is less than one. (True)
Comparison and weight puzzles
Puzzle 16 — Which is heavier
Which is heavier: a kilogram of cotton or a kilogram of iron?
Answer: They're the same — both weigh one kilogram!
Puzzle 17 — The rope
A rope was cut in 3 places. How many pieces resulted?
Answer: 4 pieces (pieces are always one more than cuts).
Puzzles 18–20 — Deduction
18) Three friends — Anna, Vi and Sofia — live in houses of three colors. Anna's house is not red and not blue. Vi's is not blue. Who lives where?
Answer: Anna — green, Vi — red, Sofia — blue.
19) Which is lighter: 10 coins or the same 10 coins in a purse?
Answer: 10 coins alone — the purse adds weight.
20) Pete is taller than Vic, and Vic is taller than Nick. Who's tallest?
Answer: Pete.
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