10 Tricky Riddles To Sharpen Your Brain

tricky riddles to sharpen your brain

Do you remember the last time you solved a tricky riddle? Wasn’t it fun and enjoyable? Riddles are not just meant for kids. Adults can solve riddles for a great solo pastime or a fantastic family time. 

Solving puzzles or riddles is a wonderful way to keep your brain sharp even in old age. Brain studies show that solving tricky puzzles triggers the growth of the new brain connections. improves short-term memory, increases the speed of processing information, improves problem-solving skills, IQ score, and lowers stress levels. 

I think there are plenty of reasons why you should not compromise on solving riddles irrespective of your age. 
Are you ready to rack your brain? 

Here Are 10 Tricky Riddles That Will Make Your Brain Strain 

1. The Bat And Ball Riddle

Tricky Riddles Workout Brain bat ball
10 Tricky Riddles To Sharpen Your Brain

The total cost price of bat and ball together is $1.10. The bat costs $1 more than the ball. How much does the ball cost?


The ball costs 5 cents. 

If the ball costs 5 cents and a bat that costs $1.05, that sums to the total cost price $1.10.

Also, $1.05 is exactly  $1 more expensive than 5 cents. 

Related: Brain Test: Can You Make A Square By Moving Only One MatchStick

2. The Lily Pad Patch Size Problem

Tricky Riddles Workout Brain lilly pad patch size
10 Tricky Riddles To Sharpen Your Brain

The patch of lily pads in a lake doubles in size every day. It takes 48 days for the patch to cover the entire lake. So, how long would it take for the patch to cover half the lake?


The lily pads would cover half the lake in 47 days. 

Since the lily pads double in size every day it would only take one day to cover half the lake in comparison to fully covering it. So, 48-1 = 47.

 3. The 7 Candles Tricky Riddle

Tricky Riddles Workout Braincandles logic
10 Tricky Riddles To Sharpen Your Brain

A big round cake has 7 candles placed on its edges in a circle. You need to blow out all of the 7 candles. But there are certain rules. 

Once you blow a candle, the candles near it will also be extinguished. When you blow again on the extinguished candle, it will reignite. Blowing on a candle means, it will go from lit to unlit, and vice versa (as well as the candles on either side). 

Please remember that blowing on the same candle twice is equivalent to not blowing at all. On the other hand, if you blow on the same candle thrice, it is the same as blowing on it once. 

How can you extinguish all of the candles with the fewest blows?


You can extinguish all of the candles with 7 blows. 

Start from the first candle, then blow on each candle one by one continuing around the circle. In doing so you will relight several candles. But eventually, candles will be extinguished by an adjacent blow. 

Related: What Is The Biggest Possible Number You Can Make By Moving Only 2 Matches?

4. Apples And Oranges Brain Teaser

Tricky Riddles Workout Brain apples oranges
10 Tricky Riddles To Sharpen Your Brain

You have three boxes. 

The first box contains – only oranges.
The second box contains – only apples 
The third box contains – both apples and oranges

Sadly, all 3 boxes are labelled wrong, so you have to fix them. But, you can’t peek inside any of the boxes! You can ask for a sample from any box to know what is inside it.

What is the minimum number of samples that you need to ask in order to label all the boxes correctly?


The minimum number of samples that you need to ask to label the boxes correctly is just one. 

Ask a sample from the box labelled as “apples and oranges”

Say you got an apple. The box may contain only apples or both apples and oranges. 

Please remember that the label is wrong. So, the box contains only apples. 

Moving to the box labelled as “oranges”, since the labels are wrong and you know that the previous box contains only apples, this box must have both apples and oranges. And surely the last box contains only oranges. Therefore, all you need is just one sample to solve the riddle. 

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Louisa Davis

Hi there! I'm just a normal person enjoying the process of life. Practicing Buddhism, I believe in the law of cause and effect. Reading and writing is always a pleasure. I enjoy researching on a range of subjects – science, psychology, and technology. Nothing can satiate my soul than good music, horror movies, psycho-thriller, and crime stuff. I enjoy photography, music and watching comedy videos. Talking to people, learning new experiences, sharing my knowledge through blogs, motivating others are things that I always look forward to.View Author posts