• Views : 40k+
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Mind Teasers : What number should replace the question mark

Difficulty Popularity

Which number replaces the question mark in the picture below ?

Discussion
Suggestions
  • Views : 40k+
  • Sol Viewed : 10k+

Mind Teasers : Changed Password Trick Teaser

Difficulty Popularity

On a random day , i was not able to logged-in with my bank password , so i contacted them on phone.
Our conversation is stated as :

myself : My password is altered.
myself : I am not able to logged-in.
customer-executive : Your password is distinct this time and it got 8 letters , out of which 2 are same of your previous password.
myself: Thanks , now i am able to logged-in.

Whats my old and new passwords ?

By Admin
  • Views : 40k+
  • Sol Viewed : 10k+

Mind Teasers : River Crossing Brain Teaser

Difficulty Popularity

River Thames needs to be crossed by Mr. Father, Mrs. Mother, A Thug, A Policeman, 2 dogs and 2 Cats. There is only one boat, which can carry only two people (or a person and an animal or two animals) at a time. Only the humans (excluding the thug) know how to operate the boat. The boat must travel back and forth across the river in order to pick up all of the people and animals.
Following rules must be followed at all times:
Mr. Father: Mr. Father cannot stay with any of the cats, without Mrs. Mother's presence.
Mrs. Mother: Mrs. Mother cannot stay with any of the dogs, without Mr. Father's presence.
Thug: The thug cannot stay with anyone, if the policeman is not there.
Policeman Allowed to travel with everyone.
2 Dogs, 2 Cats: Not allowed to travel without a human, or be in the presence of the thug without the policeman's supervision.
The dogs are not allowed to be in the presence of Mrs. Mother without the supervision of Mr. Father.
Similarly, The cats are not allowed to be in the presence of Mr. Father without the supervision of Mrs. Mother.
Both the dogs and cats are allowed to be unsupervised (provided the other rules are satisfied.)
How will everyone get to the other side of the river Thames? None of the rule can be broken, and all rules apply on the boat as well as on the land.

  • Views : 50k+
  • Sol Viewed : 20k+

Mind Teasers : Smartest Phone Brain Teaser

Difficulty Popularity

Armed robbers invaded a bank. They were busy looting when suddenly a phone rang. The phone happened to be at the reception. One of the robber asked the receptionist to attend the call and talk without giving away the situation. The call happen to be from her mother. She spoke, 'Do you have any emergency mom? Can you give me a call when I get home, I could really use your help in buying new curtains?' Then she hangs up.

The robbers are busy when the police arrives suddenly along with the mother of the receptionist. How did she know about the robbery?

By Admin
  • Views : 50k+
  • Sol Viewed : 20k+

Mind Teasers : MatchStick Squares Count Puzzle

Difficulty Popularity

Can you count the number of squares in this matchstick puzzle below?

By Admin
  • Views : 40k+
  • Sol Viewed : 10k+

Mind Teasers : Save Death Penalty Brain Teaser

Difficulty Popularity

A man committed a felony. As per the rules of the empire, the king decided to sentence him to death. However, he gave the man a choice; a choice to decide which way he wanted to die.

The man was quite smart and he said something, which saved him from his death. What do you think he must have said?

  • Views : 60k+
  • Sol Viewed : 20k+

Mind Teasers : Deductive Logic Problem

Difficulty Popularity

A professor gives a set of three questions to the most brilliant students of his university. You can see the questions in the attached image if required. To his surprise, there are different answers by all three of them. Below are the answers by them:

Student A
1. Two
2. Six
3. Two

Student B
1. Two
2. Three
3. Infinity

Student C
1. One
2. Three
3. Two

Now you have the information that each one of them has given one answer wrong, can you find out the real answers to every problem?

By Admin
  • Views : 40k+
  • Sol Viewed : 10k+

Mind Teasers : Cool Equation Riddle

Difficulty Popularity

If 1 + 9 + 11 = 1, Then what is the value of

12 + 11 + 9 = ?

By Admin
  • Views : 50k+
  • Sol Viewed : 20k+

Mind Teasers : Which Tank Will Fill First Brain Teaser

Difficulty Popularity

Famous tank fill brainteaser is shown in the picture below. Can you tell us which tank will fill first?

By Admin
  • Views : 80k+
  • Sol Viewed : 20k+

Mind Teasers : Smart Trick Teaser

Difficulty Popularity

Five girls were seen struggling while trying to get under the same small umbrella and yet, all five of them managed to remain dry completely?

How can it be true?

  • Views : 80k+
  • Sol Viewed : 20k+

Mind Teasers : Palindrome Number Riddle

Difficulty Popularity

There can be myriad ways to create a palindrome. One day, I thought of making my own palindrome. I thought of a number and then decided to add the reversed number to it. Sadly, I did not get a palindrome.

So I kept repeating this step and eventually I succeeded in creating a palindrome. I don't know if you can always create a palindrome using this method but I was able to generate one of four digits.

Can you tell me the number at which I started?

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