People love riddles because they sharpen the mind and boost logical thinking. Every riddle hides a clue — sometimes it’s tucked inside a tiny detail, and sometimes the answer is so simple that you miss it because you overthink. Some puzzles can be solved in seconds, while others confuse even the brightest problem-solvers.

Below are ten clever riddles that look easy… but most come with a twist.
See how many you can solve before you scroll down to the answers.

1.

Question: Which number should you move?

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2.

Mary lived in a large, luxurious mansion. One morning she noticed that all her jewelry had mysteriously disappeared. The police believed the theft had happened recently and questioned the four people who were inside the house at the time.

The gardener said he had been working in the garden all morning. His hands were covered in dirt.
The builder claimed he was fixing the fence. He had splinters and scratches on his palms.
Mary’s niece said she had been swimming in the pool.
The maid wore silicone gloves because she had been cleaning the windows.

The detective looked at their hands and immediately knew who was lying.

Question: Who is the thief?

3.

You have a 7-minute hourglass and an 11-minute hourglass.
Question: How can you measure exactly 15 minutes?

4.

The green house is on the right, and the red house is on the left.
Question: Where is the White House?

5.

Some months have 31 days, some have 30.
Question: How many months have 28 days?

6.

You flip a coin five times and it lands on heads each time.
Question: What is the probability it lands on heads again?

7.

A patch of lake grass doubles in size every day. In 48 days, it covers the entire lake.
Question: When does it cover half the lake?

8.

An electric train is traveling north at 160 km/h, and the wind is blowing from the west.
Question: In which direction does the smoke blow?

9.

A woman was born in 1975 and died in 1975 — and she was 22 years old when she died.
Question: How is this possible?

10.

Question: What becomes smaller every time it takes a bath?

Answers

Move the number 2 slightly upward — you get: 101 — 10² = 1.
The niece — if she had been in the pool all morning, her fingers would have been wrinkled.
Start both hourglasses. When the 7-minute one runs out, flip it. When the 11-minute one ends, flip it too. When the 7-minute glass runs out the second time, 15 minutes have passed.
In Washington, D.C.
All of them have at least 28 days.
Still 50% — previous flips don’t affect the next one.
On day 47 — it doubles the next day to cover the whole lake.
It doesn’t blow anywhere — electric trains don’t produce smoke.
She was born in hospital room 1975 and died in the same room 22 years later.
Soap.