Other Puzzles Interview Questions 

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Consider a number 235, where last digit is the sum of first
two digits i.e. 2 + 3 = 5.
How many such 3digit numbers are there?

TCS 
4 
Consider the sum: ABC + DEF + GHI = JJJ
If different letters represent different digits, and there
are no leading zeros, what does J represent? 
Wipro 
2 
How long would it take you to count 1 billion orally if you
could count 200 every minute and were given a day off every
four years? 

4 
Mr. Kamal Kishore rents a private car for AndheriColaba
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 
if (xa) power(degree) is 1 and (xa)(xb) power is 2 then
(xa)(xb).........upto ...(xz) power(degree) is how much? 
BAContinnumSolutions 
9 
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? 

5 
Three friends went to hotel for breakfast . After having breakfast total bill was Rs 25 . Each one contributed Rs 10. So total was Rs 30 . 30 is paid. waiter gave Rs 5 back to them . Three friend gave Rs 2 tips to waiter . From remaining Rs 3 each one took one rupee. As each one contributed ten . And each friend recieved one rupee back. Means each one had breakfast in nine rupee. So three friend had breakfast in 9+9+9=27. And Rs 2 is given to tips to waiter. So total money for breakfast for three friend was 27+2=29. Where is remaining one rupee? 
IIT 
2 
Consider a chessboard with a single Rook. A Rook can move
any number of square sideways/forward, but not diagonally.
What is the minimum number of moves the Rook needs to make,
in order to pass over all the squares on the chessboard and
return to the original position? 

5 
In a city, The police has surrounded the Bank. There are 50
people in the building. Each person is either an engineer or
a manager of the bank. All computer files have been deleted,
and all documents have been shredded by the managers. 
Google 
2 
How many possible combinations are there in a 3x3x3 rubics
cube?
In other words, if you wanted to solve the rubics cube by
trying different combinations, how many might it take you
(worst case senerio)?
How many for a 4x4x4 cube? 

1 
Father's age is three years more than three times the son's
age. After three years, father's age will be ten years more
than twice the son's age.
What is the father's present age? 

8 
All of the students at a college are majoring in psychology,
business, or both. 73% of the students are psychology
majors, & 62% are business majors.
If there are 200 students, how many of them are majoring in
both psychology & business? 

5 

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