• Views : 40k+
  • Sol Viewed : 10k+

Mind Teasers : Trivia Maths Problem

Difficulty Popularity

What will be the remainder if 2^300 is divided by 4?

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

Mind Teasers : Colditz Pascal Prison Escape Puzzle

Difficulty Popularity

Two world's famous prisoners 'Colditz' and 'Pascal' are locked in a cell.
They plan to escape from the cell.
They noticed there is an open window at 40 feet above the ground level.
Both of them tried very hard but are never able to reach there.

Then both of them decided to plan to escape by a tunnel and they start digging out.
After digging for just 5 days, Colditz and Pascal comes out with the much more easier plan than tunneling and they escaped.

what was the plan ?

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 : 60k+
  • Sol Viewed : 20k+

Mind Teasers : Smart Tic Tac Toe Brain Teaser

Difficulty Popularity

How will you place six crosses on a Tic Tac Toe board without forming any three-in-a-row combination?

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

Mind Teasers : Movie Pictogram Rebus

Difficulty Popularity

Which movie name is hidden in the pictogram rebus below?

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

Mind Teasers : Interview Marble Logic Puzzle

Difficulty Popularity

You are given a set of scales and 12 marbles. The scales are of the old balance variety. That is, a small dish hangs from each end of a rod that is balanced in the middle. The device enables you to conclude either that the contents of the dishes weigh the same or that the dish that falls lower has heavier contents than the other.
The 12 marbles appear to be identical. In fact, 11 of them are identical, and one is of a different weight. Your task is to identify the unusual marble and discard it. You are allowed to use the scales three times if you wish, but no more.

Note that the unusual marble may be heavier or lighter than the others. You are asked to both identify it and determine whether it is heavy or light.

  • Views : 70k+
  • Sol Viewed : 20k+

Mind Teasers : Maths Magic Riddle

Difficulty Popularity

I can prove why 1 = 2

Step1. Lets say y = x
Step2. Multiply through by x xy = x2
Step3. Subtract y2 from each side xy - y2 = x2 - y2
Step4. Factor each side y(x-y) = (x+y)(x-y)
Step5. Divide both sides by (x-y) y = x+y
Step6. Divide both sides by y y/y = x/y + y/y
Step7. And so... 1 = x/y + 1
Step8. Since x=y, x/y = 1 1 = 1 + 1
Step9. And so... 1 = 2

How is this possible ?

By Admin
  • Views : 70k+
  • Sol Viewed : 20k+

Mind Teasers : Measure Water Supply Brain Teaser

Difficulty Popularity

You had an infinite supply of water and a 5 ml and 3 ml gallons.

How would you measure exactly 4 ml in least number of steps ?

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 = ?

  • 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 : 60k+
  • Sol Viewed : 20k+

Mind Teasers : Hardest Chess Problem

Difficulty Popularity

This is a classic chess puzzle and considered to be one of the hardest puzzles in history.
As shown in the picture below, White army is arranged in a classic chess board. You need to add black army i.e
1 king
1 queen
2 rooks
2 bishops
2 knights
8 pawns
in such a way that not a single piece of either color is under attack.

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