• Views : 70k+
  • Sol Viewed : 20k+

Mind Teasers : Mathematical Equation Riddle

Difficulty Popularity

Replace the '?' by any mathematical symbol to make the expression equal to 99.

18 ? 12 ? 2 ? 3 = 111

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

Mind Teasers : Pattern Series Picture Puzzle

Difficulty Popularity

Use the logical reasoning to find out the missing piece in the picture given with this question.
Find the logic in the figure given and find out the missing one.

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

Mind Teasers : Terrorist Plane Hijack Puzzle

Difficulty Popularity

A terrorist hijacks a plane with 10 passengers and there is lots of gold in the plane.
After talking the gold , he asked the government officials for 11 parachutes.
He killed all the passenger so that no one can identify him , take one parachute and jumps off.

Was he stupid to ask for 11
parachutes if he need only one ?

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

Mind Teasers : Math Brain Teaser High School

Difficulty Popularity

There are two natural numbers whose sum is less than hundred and both of them are greater than one. Two friends Leena and Nadia knows the product and sum of the numbers respectively.

Both of them are exchanging the following statements:

Leena: I don’t know the numbers.
Nadia: "I knew you wouldn't be. I am not aware myself."
Leena: "Now I am sure I know the numbers!"
Nadia: "Now I am sure I know the numbers too!"

Can you find the two numbers?

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

Mind Teasers : Toothpick Donkey Puzzle

Difficulty Popularity

The toothpicks in the picture have been arranged to form a donkey shaped figure. You have to move two matchsticks in a way that the entire shape is rotated / reflected while being intact. Also, you can't change the tail's direction it should be pointing up.

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

Mind Teasers : Hard Ten Boxes Interview Puzzle

Difficulty Popularity

You have ten boxes and an electronic weighing machine. In those ten boxes, you have chocolates. Each chocolate weigh 20 grams. But in one box the chocolates are defective and each weigh 19 grams exactly.

Now you can weigh in the electronic weighing machine but you can use that machine just once. How will you find out which box has the defected chocolates.

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

Mind Teasers : Missing Year Number Series

Difficulty Popularity

Find the missing year in the series below?

1997 1999 ? 2011 2017 2027

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

Mind Teasers : Logical Murder Mystery Brain Teaser

Difficulty Popularity

The store room of your house is locked with a certain lock that can be closed without a key but requires a key to open which you own (there is no duplicate key). You decide to move your old stuff in the storeroom. After keeping the things carefully, you lock it back again perfectly. The next day, a dead body is found in your closed store room. Since only you have the key to the store room and you live alone, the police suspects you as a murderer. You can’t understand anything when suddenly a thought strikes your mind. There is a possible way using which the dead body could have been placed by someone else.

Can you find that way so you can tell the police and prove yourself to be innocent?

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

Mind Teasers : Quick Fire Riddle

Difficulty Popularity

There is uniqueness between these five names
Nell Edna swati itaws and Ellen.

what uniqueness am i talking about ?

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

Mind Teasers : Popular Probability Brain Teaser

Difficulty Popularity

Kangwa, Rafael and Ferdinand plans for gun fighting.
They each get a gun and take turns shooting at each other until only one person is left.

History suggest
Kangwa hits his shot 1/3 of the time, gets to shoot first.
Rafael, hits his shot 2/3 of the time, gets to shoot next if still living.
Ferdinand having perfect record at shooting(100% accuracy) shoots last , if alive.

The cycle repeats. If you are Kangwa, where should you shoot first for the highest chance of survival?

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

Mind Teasers : Maths Equation Brain Teaser

Difficulty Popularity

Arrange four eights(9) and a one(1) and only one mathematical symbol to make it equal to 100

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