| Other Puzzles Interview Questions |
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| Question | Asked @ | Answers |
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| 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 |
| A rich man died. In his will, he has divided his gold coins
among his 5 sons, 5 daughters and a manager.
According to his will: First give one coin to manager. 1/5th
of the remaining to the elder son. Now give one coin to the
manager and 1/5th of the remaining to second son and so
on..... After giving coins to 5th son, divided the remaining
coins among five daughters equally.
All should get full coins. Find the minimum number of coins
he has? | | 3 |
| 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 |
| Dr. DoLittle always goes walking to the clinic and takes the
same time while going and while coming back. One day he
noticed something.
When he left the home, the hour hand and the minute hand
were exactly opposite to each other and when he reached the
clinic, they were together.
Similarly, when he left the clinic, the hour hand and the
minute hand were together and when he reached the home, they
were exactly opposite to each other.
How much time does Dr. DoLittle take to reach home from the
clinic? Give the minimal possible answer. | | 1 |
| You have 3 points labelled A, B and C. You then have another
3 points labelled 1, 2 and 3. The aim of the puzzle is to
connect point A with point 1, 2 and 3. Point B with point 1,
2 and 3 and point C with point 1, 2 and 3.
Now while connecting the points you have to follow one rule
- the lines cannot cross over each other. | | 1 |
| Mr. Kamal Kishore rents a private car for Andheri-Colaba-
Andheri trip. It costs him Rs. 300 everyday.
One day the car driver informed Mr. Kamal Kishore that
there were two students from Bandra who wished to go from
Bandra to Colaba and back to Bandra. Bandra is halfway
between Andheri and Colaba. Mr. Kamal Kishore asked the
driver to let the students travel with him.
On the first day when they came, Mr. Kamal Kishore
said, "If you tell me the mathematically correct price you
should pay individually for your portion of the trip, I
will let you travel for free."
How much should the individual student pay for their
journey?
| | 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 |
| A tank can be filled by pipe A in 30 minutes and by pipe B
in 24 minutes. Outlet pipe C can empty the full tank in X
minutes.
If the tank is empty initially and if all the three pipes A,
B and C are opened simultaneously, the tank will NEVER be
full. Give the maximal possible value of X. | | 1 |
| SkyFi city is served by 6 subway lines - A, E, I, O, U and Z.
? When it snows, morning service on line E is delayed.
? When it rains or snows, service on the lines A, U and Z is
delayed both morning and afternoon.
? When the temperature drops below 20 C, afternoon service
is cancelled on either line A or line O, but not both.
? When the temperature rises above 40 C, afternoon service
is cancelled on either line I or line Z, but not both.
? When service on line A is delayed or cancelled, service on
line I is also delayed.
? When service on line Z is delayed or cancelled, service on
line E is also delayed.
On February 10, it snows all day with the temperature at
18C. On how many lines service will be delayed or cancelled,
including both morning and afternoon? | Infosys | 3 |
| 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 |
| There were N stations on a railroad. After adding X stations
46 additional tickets have to be printed.
Find N and X. | | 1 |
| If A * [(B + C)(D - E) - F(G*H) ] / J = 10 What number is
ABCDEFGHJ where each letter is a digit? | | 9 |
| Difference between Bholu's and Molu's age is 2 years and the
difference between Molu's and Kolu's age is 5 years.
What is the maximum possible value of the sum of the
difference in their ages, taken two at a time? | | 1 |
| Amit, Bhavin, Himanshu and Rakesh are sitting around a table.
? The Electonics Engineer is sitting to the left of the
Mechanical Engineer.
? Amit is sitting opposite to Computer Engineer.
? Himanshu likes to play Computer Games.
? Bhavin is sitting to the right of the Chemical Engineer.
Can you figure out everyone's profession? | | 1 |
| What is the four-digit number in which the first digit is
1/3 of the second, the third is the sum of the first and
second, and the last is three times the second? | | 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 |
| There are 3 ants at 3 corners of a triangle, they randomly
start moving towards another corner.
What is the probability that they don't collide?
| | 1 |
| You have 9 marbles. 8 marbles weigh 1 ounce each, & one
marble weighs 1.5 ounces. You are unable to determine which
is the heavier marble by looking at them. You have a
weighing scale that consists of 2 pans, but the scale is
only good for 2 total weighings.
How can you determine which marble is the heaviest one using
the scale & in 2 weighings? | | 1 |
| If it is given that:
25 - 2 = 3
100 x 2 = 20
36 / 3 = 2
What is 144 - 3 = ? | | 2 |
| You have 14 apples. Your Friend Marge takes away 3 and gives
you 2. You drop 7 but pick up 4. Bret takes 4 and gives 5.
You take one from Marge and give it to Bret in exchange for
3 more. You give those 3 to Marge and she gives you an apple
and an orange. Frank comes and takes the apple Marge gave
you and gives you a pear. You give the pear to Bret in
exchange for an apple. Frank then takes an apple from Marge,
gives it to Bret for an orange, gives you the orange for an
apple.
How many pears do you have? | | 2 |
| |
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