| Other Puzzles Interview Questions |
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| Question | Asked @ | Answers |
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| My friend collects antique stamps. She purchased two, but
found that she needed to raise money urgently. So she sold
them for Rs. 8000 each. On one she made 20% and on the other
she lost 20%.
How much did she gain or lose in the entire transaction? | | 2 |
| Montu, Bantu, Chantu and Pintu have pets.
Montu says, "If Pintu and I each have a dog, then exactly
one of Bantu and Chantu has a dog."
Bantu says, "If Chantu and I each have a cat, then exactly
one of Montu and Pintu has a dog."
Chantu says, "If Montu and I each have a dog, then exactly
one of Bantu and Pintu has a cat."
Pintu says, "If Bantu and I each have a cat, then exactly
one of Bantu and I has a dog."
Only one of the four is telling the truth. Who is telling
the truth? | | 1 |
| Three friends divided some bullets equally. After all of
them shot 4 bullets the total number of bullets remaining
is equal to the bullets each had after division. Find the
original number divided. | TCS | 11 |
| 3 boys go to the restaurant. Their bill was 75 rs..
So they contributed 25 each. Manager then gives 5 rs back
to the waiter and then waiter gave 3 rs back to them and
put 2 rs into his pocket..
So their actual contribution is 24 because they got 1-1 rs
back. so 24*3=72 and 2 rs into the waiter's pocket. so
74+2=74
where is 1 rs? | Merlion | 12 |
| Karan bought a little box of midget matches, each one inch
in length. He found that he could arrange them all in the
form of a triangle whose area was just as many square inches
as there were matches.
He then used up six of the matches, and found that with the
remainder he could again construct another triangle whose
area was just as many square inches as there were matches.
And using another six matches he could again do precisely
the same.
How many matches were there in the box originally?
Note that the match-box can hold maximum of 50 matches. | | 1 |
| You have four 9's and you may use any of the (+, -, /, *) as
many times as you like. I want to see a mathematical
expression which uses the four 9's to = 100
How many such expressions can you make? | | 1 |
| The secret agent X emailed some code to his head office.
They are "RADAR, LEVEL, ROTOR, REDIVIDER, MOTOR". But four
of these five words have something in common and one is fake.
Can you tell which one is fake? Ignore the fact that four of
the code-words are of the same length. | | 2 |
| In Mr. Mehta's family, there are one grandfather, one
grandmother, two fathers, two mothers, one father-in-law,
one mother-in-law, four children, three grandchildren, one
brother, two sisters, two sons, two daughters and one
daughter-in-law.
How many members are there in Mr. Mehta's family? Give
minimal possible answer.
| | 1 |
| Implement a multiple-reader-single-writer lock given a
compare-and-swap instruction. Readers cannot overtake
waiting writers. | | 1 |
| At what time after 4.00 p.m. is the minutes hand of a clock
exactly aligned with the hour hand? | HP | 5 |
| In the town called Alibaug, the following facts are true:
? No two inhabitants have exactly the same number of hairs.
? No inhabitants has exactly 2025 hairs.
? There are more inhabitants than there are hairs on the
head of any one inhabitants.
What is the largest possible number of the inhabitants of
Alibaug? | | 1 |
| There is a grid of 20 squares by 10 squares. How many
different rectangles are possible?
Note that square is a rectangle. | | 1 |
| A person travels on a cycle from home to church on a
straight road with wind against him. He took 4 hours to
reach there.
On the way back to the home, he took 3 hours to reach as
wind was in the same direction.
If there is no wind, how much time does he take to travel
from home to church? | | 1 |
| Assume that you have just heard of a scandal and you are the
first one to know. You pass it on to
four person in a matter of 30 minutes. Each of these four in
turn passes it to four other persons
in the next 30 minutes and so on.
How long it will take for everybody in the World to get to
know the scandal? | | 1 |
| In the following multiplication, certain digits have been
replaced with asterisks (*). Replace all the asterisks such
that the problem holds the result. | | 1 |
| Substitute digits for the letters to make the following
Division true
Y F Y
-----------
A Y | N E L L Y
| N L Y
----------------
P P L
P N H
----------
N L Y
N L Y
----------
0 0 0
Note that the leftmost letter can't be zero in any word.
Also, there must be a one-to-one mapping between digits and
letters. e.g. if you substitute 3 for the letter N, no other
letter can be 3 and all other N in the puzzle must be 3. | | 1 |
| A man is going to an Antique Car auction. All purchases must
be paid for in cash. He goes to the
bank and draws out $25,000.
Since the man does not want to be seen carrying that much
money, he places it in 15 evelopes
numbered 1 through 15. Each envelope contains the least
number of bills possible of any available
US currency (i.e. no two tens in place of a twenty).
At the auction he makes a successful bid of $8322 for a car.
He hands the auctioneer envelopes
number(s) 2, 8, and 14. After opening the envelopes the
auctioneer finds exactly the right amount.
How many ones did the auctioneer find in the envelopes? | | 1 |
| Four persons A, B, C and D are playing cards.Each person
has one card, laid down on the table below him, which has
two different colours on either side. The colours visible
on the table are Red, Green, Red and Blue. They see the
color on the reverse side and give the following | Infosys | 4 |
| There is a safe with a 5 digit number as the key. The 4th
digit is 4 greater than the second digit, while the 3rd
digit is 3 less than the 2nd digit. The 1st digit is thrice
the last digit. There are 3 pairs whose sum is 11.
Find the number. | | 1 |
| Sarika multiplied 414 by certain number and obtained 69958
as the answer. But she found that there is some error in the
answer - both the 9s in the answer are wrong and all the
other digits are correct.
Can you find the correct answer? | | 2 |
| |
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