• Views : 60k+
  • Sol Viewed : 20k+

Mind Teasers : Popular Math Problem

Difficulty Popularity

Evaluate 100^2 - 99^2 + 98^2 - 97^2 + 96^2 - 95^2 + ... + 2^2 - 1^2 =?

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

Mind Teasers : Smart Trick Puzzle

Difficulty Popularity

A local magician is performing his favorite trick to be under water for approx 10 minutes.

I went to the magician and told him that i can be under the water for 20 minutes.
He laughed and den responded "I will give you 1000 pounds , if you can do this"

I won the bet and get 1000 pounds.

what did i do ?

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

Mind Teasers : Unsolvable Problem

Difficulty Popularity

In a contest, four fruits (an apple, a banana, an orange, and a pear) have been placed in four closed boxes (one fruit per box). People may guess which fruit is in which box. 123 people participate in the contest. When the boxes are opened, it turns out that 43 people have guessed none of the fruits correctly, 39 people have guessed one fruit correctly, and 31 people have guessed two fruits correctly.
How many people have guessed three fruits correctly, and how many people have guessed four fruits correctly

  • 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 : 60k+
  • Sol Viewed : 20k+

Mind Teasers : Multiple Answers Problem

Difficulty Popularity

Can you solve the equation in the image below(at-least three different ways) by playing numbers 1 through 9 in the boxes so that all three equation are correct ?

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

Mind Teasers : Thinking Age Brain Teaser

Difficulty Popularity

Two friends , Torres and Lampard, meet after a long time.

Torres: Hey, how are you man?
Lampard: Not bad, got married and I have three kids now.
Torres: That's awesome. How old are they?
Lampard: The product of their ages is 72 and the sum of their ages is the same as your birth date.
Torres: Cool..But I still don't know.
Lampard: My eldest kid just started taking piano lessons.
Torres: Oh now I get it.

How old are Lampard's kids?

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

Mind Teasers : Truth Or Lie Brain Teaser

Difficulty Popularity

Zoe and Joe are twin brothers. One of them is a falsifier however the other one always speaks truth. I asked one of the, “Does Zoe lie?” The person replied with a yes.

Whom did I talk with? Zoe or Joe?

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

Mind Teasers : What word am I ?

Difficulty Popularity

What word am I?

Insights:

* I am a nine letter word.

* I am the exact inverse to expression 'neighborly and active'

* I contain the word 'over'.

* I begin will a vowel.

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

Mind Teasers : Secret Code Riddle

Difficulty Popularity

You are giving an intelligence test. In that, you are provided by the code - MOD OAT AIM DUE TIE

You know that only one word from this code is true and the rest ones are only put in to make the task difficult for you. To understand, you are provided with a clue – If you are told any one of the characters of the code word, you can find out the word easily.

Can you deduce the actual code word from the entire code?

  • 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?

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

Mind Teasers : Popular Interview Problem

Difficulty Popularity

I have two rectangular bars.

They have property such that when you light the fire from one end , it will take exactly 60 seconds to get completely burn.
However they do not burn at consistent speed (i.e it might be possible that 40 percent burn in 55 seconds and next 60 percent can burn in 10 seconds).

Problem is : How do you measure 45 seconds ?

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