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

Mind Teasers : The Hundred Number Puzzle

Difficulty Popularity

We can create number 100 by using all numbers, i.e.0123456789 and mathematical operators (+/-) in many ways.
Example
98 + 7 + 6 - 5 - 4 - 3 + 2 - 1 = 100

But if we add a condition that the use of the number 21 is the must. Then there are only a few solutions.

One of such solution is:
98 - 7 - 6 - 5 - 4 + 3 + 21 = 100

Can you tell any other solution?

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

Mind Teasers : Hard Logic Brain Teaser

Difficulty Popularity

There are 100 doors. 100 strangers have been gathered in the adjacent room. The first one goes and opens every door. The second one goes and shuts down all the even numbered doors – second, fourth, sixth... and so on. The third one goes and reverses the current position of every third door (third, sixth, ninth… and so on.) i.e. if the door is open, he shuts it and if the door is shut, he switches opens it. All the 100 strangers progresses in the similar fashion.

After the last person has done what he wanted, which doors will be left open and which ones will be shut at the end?

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

Mind Teasers : Maths Logical Brain Teaser

Difficulty Popularity

A man of faith visits the holy land where three temple are erected in a row offering a surreal divinity to the place. Awestruck at the sight of the magnificent temples, he visits the first temple where he finds that the number of flowers in his basket increases to double the number as soon as he sets his foot inside the temple. Astonished by the miracle he is completely happy and seeks it as a blessing of his god. He offers a few flowers to the stone idol of god and moves out.

Then he visits the second temple, where the same miracle happens again. The number of flowers in his basket again double up in number. With a smile on his face, he offers a few of flowers to the stone idol again and walks out after praying.

The moment he enters the third temple, the number of flowers increases to double again. Now he feels entirely blessed. He offers all the flowers at the feet of the stone idol and walks out in a moment of bliss.

When he walks out, he has no remaining flowers with him. He offered equal number of flowers at each of the temple. What is the minimum number of flowers he had before entering the first temple? How many flowers did he offer at each temple?

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

Mind Teasers : what will come in place of the question mark

Difficulty Popularity

1 3 5
2 4 ?

Do you know what will come in place of ?

We must tell you that its not 6.

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

Mind Teasers : Interesting Bet Puzzle

Difficulty Popularity

In a bowl, there are several chits with distinct numbers on them. You have to choose any two of them at random.

Will you accept the 2 to 1 bet that the numbers will be relatively prime will you accept it?

For instance:
If the numbers you pick are 6 and 13, you lose $1.
If the numbers you pick are 5 and 25, you win $2.

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

Mind Teasers : The problem of the family of Amazon

Difficulty Popularity

While walking through the deepest jungle of the amazon, Steve the explorer came across a mystical tomb. He went closer and it read:
"Here lies two faithful husbands, with their two faithful wives,
Here lies two grandmothers along with their two granddaughters,
Here lies two dad's along with their two beloved daughters,
Here lies two mothers along with their two lovely sons,
Here lies two maidens along with their two charming mothers,
Here lies two sisters along with their two amazing brothers.
All were born legitimate, with no incest."
Steve, then checked and saw that there were only 6 graves in total

How was this possible? Steve needs your help to figure it out.

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

Mind Teasers : Box Ball Logic Problem

Difficulty Popularity

There are three bags.The first bag has two blue rocks. The second bag has two red rocks. The third bag has a blue and a red rock. All bags are labeled but all labels are wrong.You are allowed to open one bag, pick one rock at random, see its color and put it back into the bag, without seeing the color of the other rock.

How many such operations are necessary to correctly label the bags ?

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

Mind Teasers : Trick Relationship Riddle

Difficulty Popularity

If Erica's daughter is my daughter's mom, who am I to Erica?

  • 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 ?

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

Mind Teasers : Maths Cube Riddle

Difficulty Popularity

You have two cubes with plane faces. You have to mark both the cubes with numbers in a manner that all the days of a month can be portrayed using those cubes. Also, note that you have to use both the cubes for displaying any date. Suppose if you have to display the 5th day of the month, you will have to display it as 05.

Can you do it?

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

Mind Teasers : Ten From Nine Toothpicks Trick Riddle

Difficulty Popularity

If you were asked to pick nine toothpicks and make them ten without breaking any of them, how will you do it?

Submit your Email Address to get latest post directly to your inbox.

Latest Puzzles

23 January
Funny Tiger OneLIner Riddle

How much fur should we get from the Tige...

22 January
Ball Pyramid Puzzle

Can you count the numbers of the ball in...

21 January
What Am I Poem Riddle

I am the end of life but also the start ...

20 January
Most Popular Number Series IAS Problem

Can you solve the number series problem ...

19 January
Nice What Is It Riddle

It has no heart but yet it lives.
...

18 January
Number Pyramid Puzzle

Can you solve below number pyramid puzzl...

17 January
Japanese Ship Sailing Puzzle

A Japanese ship is on route back to the ...

Puzzles Tags :

Illusions Tags :