• Views : 30k+
  • Sol Viewed : 10k+

Mind Teasers : Interesting Coin Probability Puzzle

Difficulty Popularity

A man tosses three coins in the air. When they land, he finds that two of the coins have heads up and one has tails up.

What is the probability that when the coins are tossed again, they will land again with two heads up and one tails up.

Please note that the coins are unbiased.

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

Mind Teasers : Picture Brain Teaser

Difficulty Popularity

You can see the figure or draw one of your own. The scenario is as shown. There are three houses represented with the triangle over the square. There are three utilities: W, G and E representing water, gas and electricity respectively.

Can you draw a line and get each utility into every house (9) total lines without ever crossing any line?

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

Mind Teasers : Sports Cricket Brain Teaser

Difficulty Popularity

Shihar Dhawan and Virat Kohli were batting on 94.
Seven runs were required to win by the team and only three balls were left.

At the end, both of them secured a century without being out.

How can this be feasible?

  • 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 ?

  • Views : 90k+
  • Sol Viewed : 30k+

Mind Teasers : Tough Two Jug Measuring Puzzle

Difficulty Popularity

I got two jugs of
A) 11 liter
B) 6 liter

How can I measure exactly 9 liters ?

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

Mind Teasers : Shortest Who Am I

Difficulty Popularity

Who am I?

  • Views : 90k+
  • Sol Viewed : 30k+

Mind Teasers : Popular Thinking Puzzle

Difficulty Popularity

Once there lived a king who did not allow anybody to leave the kingdom and any foreigners in his kingdom. There was only one bridge that connected his empire with the outer world. A guard who was a sharpshooter was specially assigned for a lookout on the bridge. According to the orders, anyone moving outside should be killed and anyone coming to his kingdom should be sent back. To take rest, the guard used to sit inside his hut for 5 minutes and return back on the lookout. The bridge took a minimum of 8 minutes to pass.

Even then, a woman was able to escape the kingdom without incurring any kind of harm to the guard.

How ?

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

Mind Teasers : Brain Teasing Statement Puzzle

Difficulty Popularity

The question is simple, you have to find out who did it? However the way to the solution might be tricky and confusing. Just remember that only one of the statement is true and rest three are false.

1. Ms. Rihanna: 'Ms. Britney did it.'
2. Ms. Britney: 'Ms. Rihanna did it.'
3. Ms. Gwyneth: 'Ms. Britney’s telling the truth.'
4. Ms. Yoon: 'Ms. Gwyneth’s not lying.'

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

Mind Teasers : Classic Card Brain Teaser

Difficulty Popularity

A pack of cards has 52 cards. You are blindfolded. Out of 52, 42 cards are facing down while 10 are facing up. You have been asked to divide this pack of cards into two decks - so that each deck contains an equal number of face up cards. Remember, you are blindfolded.

How will you do it?

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

Mind Teasers : Popular Logical Brain Teaser

Difficulty Popularity

A couple had to take shelter in a hotel for they could not proceed their journey in the rain. Having nothing to do at all, they started playing cards. Suddenly there was a short circuit and the lights went off. The husband inverted the position of 15 cards in the deck (52 cards normal deck) and shuffled the deck.

Now he asked his wife to divide the deck into two different piles which may not be equal but both of them should have equal number of cards facing up. There was no source of light in the room and the wife was unable to see the cards.

For a certain amount of time, she thought and then divided the cards in two piles. To the husband’s astonishment, both of the piles had equal number of cards facing up.

How did she do it?

  • 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?

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