#51 - Most Famous Maths Puzzle

I can prove why 1 = 2

* Lets say y = x
* Multiply through by x xy = x2
* Subtract y2 from each side xy - y2 = x2 - y2
* Factor each side y(x-y) = (x+y)(x-y)
* Divide both sides by (x-y) y = x+y
* Divide both sides by y y/y = x/y + y/y
* And so... 1 = x/y + 1
* Since x=y, x/y = 1 1 = 1 + 1
* And so... 1 = 2

How is this possible ?

Most Famous Maths Puzzle

Step 5 is invalid, because we are dividing by (x-y), and since x=y, we are thus dividing by 0. This is an invalid mathematical operation (division by 0), and so by not following basic mathematical rules

#52 - Shortest Meaningful English Sentence Puzzle

Find the smallest sentence with all the english alphabets.

PACK MY BOX WITH FIVE DOZEN LIQUOR JUGS.

#53 - Classic Logical Interview Puzzle

I have two rectangular wires.
Both of them have property that when i light the fire from one end , it will take 60 minutes to get completely burn.
However they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes).

So how could i measure 45 minutes ?

Classic Logical Interview Puzzle

Steps:
A) burn 1st wire from both end and 2nd wire from one end
B) After 30 minutes(when 1st wire gets completely burned out) , burn the second wire from 2nd end as well
C) when 2nd run completely gets burned , you know its 45 minutes.

#54 - Logic Problem Puzzle

A donkey travels the exact same distance daily.
strangely 2 of his legs travels 40 kilometers and the remaining two travels 41 kilometers.
Obviously 2 donkey legs cannot be a 1km ahead of the other 2.

The donkey is perfectly normal. So how come this be true ?

Logic Problem Puzzle

The donkey is moving in circular path and hence outside legs travels more distance than inner legs

#55 - Sherlock Holmes Riddle - How Women Die

British Police inspect a room where there are no windows, no doors, no tables and is almost empty except there is just a puddle of water. They found a dead woman who obviously hung herself from the ceiling, but they are not able to figure out how this had happened.

Sherlock and John Watson entered the crime scene and were easily able to solve the case.

How did the women die?

Sherlock Holmes Riddle - How Women Die

She hung herself using big Ice slabs, which are now melted and hence puddle of water.

#56 - Short Jokes Riddles

1. How can we put a elephant in the refrigerator ?
2. How can we put a Giraffe in a refrigerator ?
3. The king of the jungle invites all the animals to a party everyone comes except for one animal, which animal ?
4. You come to a crocodile infested lake, you can't go around it, you can't co under it and you can't go over it, how do you get across ?

Short Jokes Riddles


1. We open the door, put the elephant in the refrigerator and close the door.
2. We should open the door, take the elephant out of refrigerator, put the giraffe in and close the door
3. The giraffe, hes still in the refrigerator
4. You swim across all the crocodile are at the party.

#57 - Decode The Picture Puzzle

Can you decode this picture and tell me what it says ?

Decode The Picture Puzzle

I Ate Some Pie and It Was Delicious

#58 - Logical Clock Problem

Time in a digital clock can be palindromic like 12:12 (same when read forwards or backwards).

Whats the minimum interval between 2 times that are palindromic ?

Logical Clock Problem

2 minutes (between 9:59 and 10:01)

#59 - Maths Magic Puzzle

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 ?

Maths Magic Puzzle

12345679

12345679 × 9 = 111111111 (only 1s)
12345679 × 18 = 222222222 (only 2s)
12345679 × 27 = 333333333 (only 3s)
12345679 × 36 = 444444444 (only 4s)
12345679 × 45 = 555555555 (only 5s)

#60 - What Is Time Riddle

I noticed that on my big wall clock, there is a time when the minute and hour clock are exactly between one and two.
Also, I notice both hands lie on top of each other.

What is the time I am talking about?

What Is Time Riddle

12:00

both minute and hour clock lie exactly between the number one and two in the number.