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If 'A' means '-', 'B' means '/', 'C' means '+', and 'D' means 'X' then

Find the value of the following:

21 B 7 C 9 D 10 A 13

Find the value of the following:

21 B 7 C 9 D 10 A 13

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John is out with his class of 25 boys to a local park. Each guy has a remote controlled car with them. The park has a racetrack that allows 5 cars to be raced at once. Their teacher, Mr. Ted, declares that the top three fastest cars get ice cream.

How many races are required to determine the 3 fastest cars?

How many races are required to determine the 3 fastest cars?

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A homicide detective is called at a crime scene. A man is lying dead in front of the building and seeking the position of the windows on the building and the position in which the body is lying, it is evident that the man jumped out from one of them and committed suicide.

The detective asks his team to collect the traces if they can find any on the body and heads towards the building. He goes to the first floor and towards the room that is on the front side. Inside the room, he lights a cigarette, walks towards the window facing the dead body, opens the window and throws out the cigarette. He then goes to the second floor and repeats the same process.

He keeps doing the same thing till he is done with all the floors and then takes the lift to the ground floor. Upon reaching there, he informs the team that it is not a suicide but a murder.

While the whole team is shocked to hear the revelation, he lights another cigarette and takes a hard puff.

How do you think he found out that it was a not a suicide?

The detective asks his team to collect the traces if they can find any on the body and heads towards the building. He goes to the first floor and towards the room that is on the front side. Inside the room, he lights a cigarette, walks towards the window facing the dead body, opens the window and throws out the cigarette. He then goes to the second floor and repeats the same process.

He keeps doing the same thing till he is done with all the floors and then takes the lift to the ground floor. Upon reaching there, he informs the team that it is not a suicide but a murder.

While the whole team is shocked to hear the revelation, he lights another cigarette and takes a hard puff.

How do you think he found out that it was a not a suicide?

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A bank customer had Rs.100 in his account. He then made 6 withdrawals, totaling Rs.. He kept a record of these withdrawals, and the balance remaining in the account, as follows:

Withdrawals Balance left

Rs.50 Rs.50

Rs.25 Rs.25

Rs.10 Rs.15

Rs.8 Rs.7

Rs.5 Rs.2

Rs.2 Rs.0

Rs.100 Rs.99

Why are the Totals not exactly right ?

Withdrawals Balance left

Rs.50 Rs.50

Rs.25 Rs.25

Rs.10 Rs.15

Rs.8 Rs.7

Rs.5 Rs.2

Rs.2 Rs.0

Rs.100 Rs.99

Why are the Totals not exactly right ?

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Imagine a picture in your mind. There is a rose plant. A few roses have grown up in the plant. There are a few bees hovering over them.

Now read the given statements carefully:

1) If every one of the bees lands on a rose, one of them won't get a rose.

2) If two bees share rise together, then there will be one rose left without any bee.

Can you find out the number of roses on the plant and the number of bees?

Now read the given statements carefully:

1) If every one of the bees lands on a rose, one of them won't get a rose.

2) If two bees share rise together, then there will be one rose left without any bee.

Can you find out the number of roses on the plant and the number of bees?

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In Era of Abraham Lincoln, there is a world famous surgeon whose more than 90% surgeries are successful and yet almost all of his patients die.

Explain ?

Explain ?

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In a recreational activity, you are given four different jars of 2 liters, 4 liters, 6 liters and 8 liters respectively with an unlimited water supply. Then you are asked to measure exactly 5 liters of water using them.

How will you do it?

How will you do it?

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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 ?

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

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We all know that square root of number 121 is 11.

But do you know what si the square root of the number "12345678987654321" ?

But do you know what si the square root of the number "12345678987654321" ?

Difficulty Popularity

A man wronged the king and thus he was put under a trial for murder. But the king knew that the person was innocent. Also he was suspicious that his innocence will soon come out among the people. Thus, he decided to play a game of chance on the name of their almighty god.

He summoned all the people along with the accused person. He put in two chits of paper inside a bowl. He told the people that one chit has ‘Guilty’ written over it and the other one has ‘Innocent’ written over it. He tells the people that the god will decide if the accused person is culprit or not. He then asks the person to draw a chit.

Obviously, the king is cheating and he has written ‘Guilty’ over both the chits. So no matter what chit the person picks, everybody will believe that it is lord's judgment and no one will bother to look at the other chit. Even the accused person knows it that the king had played a full proof game.

What should he do in order to be conceived as an innocent person?

He summoned all the people along with the accused person. He put in two chits of paper inside a bowl. He told the people that one chit has ‘Guilty’ written over it and the other one has ‘Innocent’ written over it. He tells the people that the god will decide if the accused person is culprit or not. He then asks the person to draw a chit.

Obviously, the king is cheating and he has written ‘Guilty’ over both the chits. So no matter what chit the person picks, everybody will believe that it is lord's judgment and no one will bother to look at the other chit. Even the accused person knows it that the king had played a full proof game.

What should he do in order to be conceived as an innocent person?

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