Challenge your brain to some of the **difficult riddles with answers** in our collection. The harder they are the more you can brag you solved them!

## Difficult riddles with answers

Friends, I am thinking of four numbers such that

The sum of all the four numbers is 31.

Only one of number is odd.

The highest number minus the lowest number is 7.

If you subtract the middle two numbers, it equals two.

There are no duplicate numbers.

What four numbers i am thinking of ?

A 3 digit number is such that it’s unit digit is equal to the product of the other two digits which are prime.

Also, the difference between it’s reverse and itself is 396.

What is the sum of the three digits ?

It is given that the first two digits of the required number are prime numbers i.e. 2, 3, 5 or 7. Note that 1 is neither prime nor composite. Also, the third digit is the multiplication of the first two digits. Thus, first two digits must be either 2 or 3 i.e.

22, 23, 32 or 33 which means that there are four possible numbers – 224, 236,326 and 339.

Now, it is also given that – the difference between it’s reverse and itself is 396.

Only 236 satisfies this condition. Hence, the sum of the three digits is 11.

A man drive his car to the office at 20miles/hr.

After reaching office, he realize that its a new year holiday so he went back home at a speed of 30miles/hr.

Discounting the time spent in the stoppage what was his average speed of his journey ?

D : distance traveled

T1 : time of going to office

T2 : time of returning back

Y : Average Speed

D = 20 * T1

T1 = D/20

D = 30 * T2

T2 = D/30

2D = Y(T2 + T1)

2D = Y(D/20 + D/30)

2D = Y(3D/60 + 2D/60)

2D = Y(5D/60)

Y = 120D/5D

=> Y = 24

A clock loses 10 minutes each hour.

If the clock is set correctly at noon,what time is it when it reads 3 PM ?

The clock loses 10 minutes each hour,

so it loses 5 minutes every half-hour,

and it loses 1 minute very 6 minutes.

It is 12:50 PM at 1:00 o’clock.

It is 1:40 PM at 2:00 o’clock.

It is 2:30 PM at 3:00 o’clock.

It is 2:55 PM at 3:30 o’clock.

It is 3:00 PM at 3:36 o’clock.

A farmer with his neighbour once went to Emperor Akbar’s court with a complaint.

‘Your Majesty, I bought a well from him,’ said the farmer pointing to his neighbour, ‘and now he wants me to pay for the water.’

‘That’s right, your Majesty,’ said the neighbour. ‘I sold him the well but not the water’.

The Emperor asked Birbal(an intelligent adviser to the king) to settle the dispute.

How did Birbal solve the dispute?

Charley Smallish treats his best girl to a trolley ride, but on account of his limited resources they plan to walk back, so, if the car goes at the rate of nine miles an hour and they can walk at the rate of three miles an hour, how far could they ride if they must be back in eight hours?

They rode for two hours, going 18 miles, and walked back in six hours, thus consuming their eight hours.

A four digit number (not beginning with 0) can be represented by ABCD. There is one number such that ABCD=A^B*C^D, where A^B means A raised to the B power. Can you find it?

Three alcoholic adults takilu whisku and Rumu got some liquor.

takilu gave whisku and Rumu as many liquor as they already had.

Then whisku gave takilu and Rumu as many liquor as they already had.

Finally Rumu gave whisku and takilu as many liquor as they already had.

Now each of them have 24 liquor.

How many liquor they had originally ?

Solve the problem in reverse way as below :

takilu whisku Rumu

24 24 24

12 12 48

6 42 24

39 21 12

## Difficult riddles with answers 2

Can you get total of 720 by using six zeros 0,0,0,0,0,0 and any maths operators.

(0!+0!+0!+0!+0!+0!)!

=(1+1+1+1+1+1)!

=(5)!

=6! is 6*5*4*3*2*1=720

If,

29 – 1 = 30

9 – 1 = 10

14 – 1 = 15

Based on above logic, can you prove that

11 – 1 = 10 ?

Explanation:

Remove I (Roman equivalent of number 1) from the left side, you will the get the number on the right.

29 – 1 = 30

XXIX – I = XXX (Roman equivalent of number 30)

14 – 1 = 15

XIV – I = XV (Roman equivalent of number 15)

9 – 1 =10

IX – I = X (Roman equivalent of number 10)

Similarly,

11 – 1 = 10

XI – I = X (Roman equivalent of number 10)

Let us say there are two natural numbers ‘A’ and ‘B’. We performed eight operations on two numbers as

Step-1: A = B

Step-2: A x A = B x A

Step-3: A^2 – B^2 = AB – B^2

Step-4: (A + B)( A – B) = B(A – B)

Step-5: A + B = B

Step-6: B + B = B

Step-7: 2B = B

Step- 8: 2 = 1

What’s the trick?

Explanation:

We divided the two sides by (A-B).Since A = B which indicates that (A – B) = 0 and we cannot divide by zero.

Today is Ramanujan birthday.

A year Ago on his birthday, he had five candles and he lit all except the last one.

Today he is going to light all the candles.

How old is Ramanujan Today?

Note: He is not turning five today.

Explanation:

Ramanujan lighting the candles in binary.

11110 =30

11111 =31

I am hard to find, difficult to leave and impossible to forget. What am I?

Why do men find it difficult to make eye contact?

Why is it difficult to find men who are sensitive, caring and good-looking?

If you eat me, my sender will eat you. What am I?

How do you fit 10 horses into 9 stalls.

I look flat, but I am deep,

Hidden realms I shelter.

Lives I take, but food I offer.

At times I am beautiful.

I can be calm, angry and turbulent.

I have no heart, but offer pleasure as well as death.

No man can own me, yet I encompass what all men must have.

## Difficult riddles with answers 3

What always ends everything?

What has only two words, but thousands of letters?

What is as big as an elephant, but weighs nothing at all?

How many letters are in the alphabet?

How is Ron 10 years old in 1870, but only 5 years old in 1875?

There was a man walking in the desert. It was an especially hot day that day. In the distance, the man suddenly saw a restaurant. He rejoiced and ran to the restaurant and immediately asked the waiter for a glass of water. Instead, the waiter pulled out a gun and pointed it at the man’s head. The man replied with, “thank you”. Why did the man say “thank you”?

I am a five-letter word. I sounds the same when you remove my first letter. I sound the same when you remove my 3rd letter. I sound the same when you remove my last letter, and I sound the same when you remove all three. Which word am I?

A man runs away from home. He turns left, and keeps running. After some time he turns left again and keeps running. He later turns left once more and runs back home. Who was the man in the mask?

There are 6 sisters. Each sister has 1 brother. How many brothers are in the sisters family?

A container without hinges, lock or a key, yet a golden treasure lies inside me. What am I?

Only one color, but not one size,

stuck at the bottom, yet easily flies;

present in sun, but not in rain;

doing no harm, and feeling no pain.

First, think of the color of clouds. Next think of the color of snow. Last, think of the color of the moon. Now, what do cows drink?

What can’t be burned in a fire nor drowned in water?

What is half of 8?

Hint: It’s not 4

I can fly but I have no wings. I can cry but I have no eyes. Wherever I go darkness follows me. What am I?

## Difficult riddles with answers 4

How is 7 different from the rest of the numbers from 1-10?

If you are running a race, and you pass the person in second, what place are you in?

Two men are in a desert. They both have packs on. One of the guys is dead. The guy who is alive has his pack open, the guy who is dead has his pack closed. What is in the pack?

What is it a child can make that no one can ever see?

What can fill an entire room without taking up any space?

I no longer have eyes, but once I did see. Once I had thoughts, but now I’m white and empty. What am I?

What can you hold in your right hand but never in your left hand?

Poor people have it. Rich people need it. If you eat it, you’ll sick or maybe die. What is it?

What is it that no one wants, but no one wants to lose?

How many months have 28 days?

What comes once in a minute, twice in a moment, but never in a thousand years?

How do you make the number one disappear by adding to it?

The answer I give is yes, but what I mean is no. What was the question?

I can be written, I can be spoken, I can be exposed, I can be broken. What am I?

Add two letters to me and I become shorter? What am I?

From house to house I go, sometimes narrow, sometimes wide. And whether there’s rain or snow I always stay outside. What am I?

What’s black when you get it, red when you use it, and white when you’re all through with it?

Have a great time with *difficult riddles with answers* and don’t forget to share the laughter and mental stimulation with others!