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 ?
The required number is 236 and the sum is 11.
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 ?
4miles/hr (not 25miles/hr which might be guessed by many)
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?
Didn’t you say that you sold your well to this farmer?’ Birbal asked the neighbour. ‘So, the well belongs to him now, but you have kept your water in his well. Is that right? Well, in that case you will have to pay him a rent or take your water out at once.’The neighbour realized that he was outwitted. He quickly apologized and gave up his claim.”
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?
Charley Smallish and his best girl could trolley three times as fast as they could walk. Therefore, three-quarters of their outing time was spent in walking, and but one-quarter in riding, since they had to walk back.
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?
The only number is 2592. 2^5 is 32 and 9^2 is 81. 32*81 is 2592.
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 ?
XI – I = X
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)
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?
Step5 is Wrong.
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.
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.
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?