Best Riddles of January 2015

Let us simplify boxes by naming them from 1 to 10.
Now the trick here is to pick different number of balls from different boxes. So to simplify things, we will pick balls corresponding to box number.

Thus, pick 1 ball from Box 1, 2 balls from box 2, 3 balls from box 3 and so on. You will have 55 balls altogether. Now, put them all in the balance.

If all balls were weighing accurate 10 grams, the total weight of the 55 balls would have been 550 grams. But one of the box must have had the defective balls.

Suppose if the defective balls were in box number 2, then the total weight will be 2 grams less than 550. If the defective balls were in box 8, the total weight will be less than 8 grams from 550. In this way, you will be able to identify which box has the defective balls.

1) If bullets are placed in the adjacent chambers:
Let us do this step by step. The possible combinations for the bullets are:
1, 2
2, 3
3, 4
4, 5
5, 6
6, 1

Now if you ask not to spin the barrel:
The first shot went empty and thus the events (6, 1) and (1, 2) dont have bullets in them. Now only four possible shots are available.
Thus, P (death) = 1/4 = 0.25
P (Survival) = 1- 0.25 = 0.75

If you ask to spin the barrel:
Since you were not hit in the first shot, therefore
P (death) in the second shot = 2/6 = 0.33
P (Survival) in the second shot = 1 - 0.33 = 0.77

Clearly, you will have better chances of survival if you ask him not to spin the barrel.


2) If bullets are not placed in the adjacent slots:

If you dont spin it:
You were not hit in the first shot. Thus,
P (Death) in second shot = 2/5 = 0.4
P (Survival) in second shot = 1 - 0.4= 0.6

If you spin the barrel
P (death) in the second shot = 2/6 = 1/3 = 0.33
P (Survival) in second shot = 1 - 0.33 = 0.77

Here, you have better chances of survival if you chose to spin the barrel.

Refer the picture to see how we have done it.

Source Code.

If you are a technical person or even if you manage websites or blogs, you clearly know what I shown in the picture.

This is possible because Adam had remarried.

There are a total of six F letters in the given sentence. If you got it wrong, read the sentence again.

The suspicion was natural. If the man thought the room was his, he would have tried the keys and not knocked on the door.

The word is "Buffalo".

According to the dictionary meaning, Buffalo is a noun meaning an animal. It is also a verb meaning "to bully".

Sentence: Buffalo.
Meaning: Go and bully someone.

Sentence: Buffalo buffalo.
Meaning: Animals bully.

Sentence: Buffalo buffalo buffalo.
Meaning: Animals bully other animals.

Sentence: Buffalo buffalo buffalo buffalo.
Meaning: Animals that are bullied by other animals, in turn, bully other animals.

So many of you might have struggled solving this. This is because our mind usually restricts us to work within the space given which here were the dots.

It will take him an hour to take all five tablets.

Suppose he takes the first tablet at 9:00 pm. He will take the second tablet at 9:15, the third at 9:30, the fourth at 9:45 and the last at 10:00.