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Q. A man leaves office daily at 7pm� A driver with car
comes from his home to pick him from office and bring back
home. One day he gets free at 5:30 and instead of waiting
for driver he starts walking towards home. In the way he
meets the car and returns home on car� He reaches home 20
minutes earlier than usual. In how much time does the man
reach home usually??

Ans. 1hr 20min

Q� The following truth table is given� What is Y equal to??

A
B
C
Y

0
0
0
1

0
0
1
1

0
1
0
0

0
1
1
0

1
0
0
0

1
0
1
0

1
1
0
1

1
1
1
1


Ans. (A')(B')(AB) , where ' stands for complement.


Q. A works thrice as much as B. If A takes 60 days less
than B to do a work then find the number of days it would
take to������ complete the work if both work together?

Ans. 22�days

Q.� How many 1's are there in the binary form of� 8*1024 +
3*64 + 3

Ans. 4

Q. In a digital circuit which was to implement (A B) + (A)
XOR(B), the designer implements (A B) (A)XOR(B)�
��� What is the probability of error in it ?


Q. A boy has Rs 2. He wins or loses Re 1 at a time� If he
wins he gets Re 1 and if he loses the game he loses Re 1.
���� He can loose only 5 times. He is out of the game if he
earns Rs 5.
���� Find the number of ways in which this is possible?

Ans. 16

Q. If there are 1024*1280 pixels on a screen and each pixel
can have around 16 million colors
���� Find the memory required for this?

Ans. 4MB


Q. On a particular day A and B decide that they would
either speak the truth or will lie.
���� C asks A whether he is speaking truth or lying?
���� He answers and B listens to what he said. C then asks
B what A has said� B says "A says that he is a liar"
���� What is B speaking ?

(a) Truth
(b) Lie
(c) Truth when A lies
(d) Cannot be determined

Ans. (b)

Q. What is the angle between the two hands of a clock when
time is 8:30

Ans. 75(approx)

Q. A student is ranked 13th from right and 8th from left.
How many students are there in totality ?

Q. A man walks east and turns right and then from there to
his left and then 45degrees to
� his right.In which direction did he go

Ans. North west

Q. A student gets 70% in one subject, 80% in the other. To
get an�overall of 75% how much should get in third subject.

Q. A man shows his friend�a woman sitting in a park and
says that she the daughter of my��grandmother's only son.
��� What is the relation between the two

Ans. Daughter


Patni Placement Papers | Patni Interview Procedure | Patni
Aptitude Questions | Patni Technical Questions | Patni
Interview Questions

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