In The 1st month of this year(year 2013) , i noticed that the date 13-1-13 (13 January 2013) is special.
This date is special as :
Date * Month = Year.
Can you figure out which year of this centaury have maximum number of such dates ?
2024
Has seven such instance in the year-
24-01-24
12-02-24
08-03-24
06-04-24
04-06-24
03-08-24
02-12-24
Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number.
125874 shuffled to 251748
Why do we preferably have round manhole covers and not the square ones ?
Squares have longer diagonal length and thus they may fall inside if twisted. However such is not the case with a circle one.
Do you know of a place where the wind blows south and then suddenly shifts direction towards the north ?
The place is the South Pole. Until the point the wind reaches the pole, it is going south but the moment it passes the pole, it is going north.
A man comes across a coin that is dated 226 B.C. Can you calculate its worth ?
That coin is fake. This is because the B.C. and A.D. dating system was not invented till the year 525. Thus the worth of the coin is zero undoubtedly.
Can you think of any three dimensional shape that comprises of exactly two surfaces ?
A cone comprises of exactly two surfaces despite of the fact that it is a three dimensional figure.
You are hanging around in NYC when a person approaches you.
"Leaving the bald people aside, I can bet a hundred bucks that there are two people living in NYC who have same number of hairs on their heads," he says to you.
You say that you will take the bet. After talking to the man for a couple of minutes, you realize that you have lost the bet.
What did the person say to you that proved his statement ?
This problem can be best solved using the pigeonhole principle.
The argument will go like this:
Assume that all the non-bald people in NYC have different number of hairs on their head. The population is about 9 million and let us assume that there are 8 million among them who are not bald.
Now, those 8 million people need to have different number of hairs. On an average, people have just 100, 000 hairs on their head. If we keep on assuming that there is someone with just one hair, someone with two, someone with three and so on, there will be 7, 900, 00 other people left who will have more than 100, 000 hairs on their head and need different number of hairs.
Now, as per this assumption, if we keep increasing one hair for each person, to make everybody hair different in numbers, we will come across someone with 8, 000, 000 hairs. But that is practically impossible (even 1, 000, 000 is impossible). Thus there must be two people who are having same number of hairs.
There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.
Do you know what word is that?
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.
Two mates Timon and Pumba were talking about their families. Timon told some nice stories concerning his unafraid grandfather who fought for the Kingdom in "World War One". Timon told that his grandparent is so brave that he was awarded a bravery medal with words "For our unafraid troopers In war One" embedded into it.
Pumba is aware of that his friend is lying. How ?
World War One was named only after World War Two
We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?
Both A and D will rotate at Same speed. Gears of the equal size will rotate at constant speeds despite or any sized gears in between them.