# Light the Candles

On her drawing table, Sayna lit 12 coloured candles. A few seconds later she blew two candles off.

How many candles Sayna have at the end?

# Similar Riddles

##### Count the Triangles

How many triangles can you find in this given picture?

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##### Maths Magic

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

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##### Prisoner to be freed

The warden meets with 23 new prisoners when they arrive. He tells them, "You may meet today and plan a strategy. But after today, you will be in isolated cells and will have no communication with one another.

"In the prison is a switch room, which contains two light switches labeled 1 and 2, each of which can be in either up or the down position. I am not telling you their present positions. The switches are not connected to anything.

"After today, from time to time whenever I feel so inclined, I will select one prisoner at random and escort him to the switch room. This prisoner will select one of the two switches and reverse its position. He must flip one switch when he visits the switch room, and may only flip one of the switches. Then he'll be led back to his cell.

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"Given enough time, everyone will eventually visit the switch room the same number of times as everyone else. At any time, anyone may declare to me, 'We have all visited the switch room.'

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What is the strategy they come up with so that they can be free?

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##### Behind Each Other

John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do?

But it is quite possible, do you know how?

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##### What does this say

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##### Romans Castle Brain Twister

Once upon a time, there was a castle on a square island. The entire island was surrounded by a 14m wide trench. The Romans had wanted to invade the castle and had brought a few wooden planks along with them to facilitate themselves in crossing the moat. The planks were however found to be only 13m long.

The Romans still managed to cross the trench. How did they do it?

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##### Magic Math

Can you find the missing number in the third row?
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5 2 ?

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##### Crossing The Bridge

A guard is positioned at the one side of the bridge saying â€˜Aâ€™. His task is to shoot all those who try to leave from â€˜Aâ€™ to the other side and say â€˜Bâ€™. He also need to welcome the person who comes from another side â€˜Bâ€™ to his side â€˜Aâ€™. The guard comes out of his post every 1 hour and looks down the bridge for any people trying to leave. You are at side â€˜Aâ€™ and wish to go to another side â€˜Bâ€™. you also know that it would take 1:45 hr to cross the bridge. How will you cross the bridge?

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### Amazing Facts

###### No Solution

In 2007, a puzzle was released and \$2 million prizes were offered for the first complete solution. The competition ended at noon on 31 December 2010, with no solution being found. Wiki