tcs aptitude questions



tcs aptitude questions..

Answer / neeraj

1. 1. There are 150 weights. Some are 1 kg weights and some
are 2 kg weights. The sum of the weights is 260.What is the
number of 1kg weights? Ans 40
2. A is driving on a highway when the police fines him for
over speeding and exceeding the limit by 10 km/hr. At the
same time B is fined for over speeding by twice the amount
by which A exceeded the limit. If he was driving at 35 km/hr
what is the speed limit for the road? Ans 15kmph
3. A moves 3 kms east from his starting point. He then
travels 5 kms north. From that point he moves 8 kms to the
east. How far is A from his starting point? Ans 13 kms
4. A car travels 12 kms with a 4/5th filled tank. How far
will the car travel with 1/3 filled tank? Ans 5 kms
5. The sum of the digits of a two-digit number is 8. When 18
is added to the number, the digits are reversed. Find the
number? Ans 35
6. The cost of one pencil, two pens and four erasers is
Rs.22 while the cost of five pencils, four pens and two
erasers is Rs.32.How much will three pencils, three pens and
three erasers cost? Ans 27
7. Fathers age is 5 times his son's age. 4 years back the
father was 9 times older than son. Find the fathers'
`present age. Ans 40 yrs
8. What number should be added to or subtracted from each
term of the ratio 17 : 24 so that it becomes equal to 1 : 2.
ans:10 subtracted
9. What is the 12th term of the series 2, 5, 8, .... ans:35
10. If 20 men take 15 days to complete a job, in how many
days can 25 men finish that work? ans: 12 days
11. In a fraction, if 1 is added to both the numerator at
the denominator, the fraction becomes 1/2. If numerator is
subtracted from the denominator, the fraction becomes 3/4.
Find the fraction. ans: 3/7
12. If Rs.1260 is divided between A, B and C in the ratio
2:3:4, what is C's share? ans:560
13. A shopkeeper bought a watch for Rs.400 and sold it for
Rs.500.What is his profit percentage? ans:25 percent
14. What percent of 60 is 12? ans:20%
15. Hansie made the following amounts in seven games of
cricket in India: Rs.10, Rs.15, Rs.21, Rs.12, Rs.18, Rs.19
and Rs.17 (all figures in crores of course). Find his
average earnings. ans:16 crores

16) Bhanu spends 30% of his income on petrol on scooter. ¼
of the remaining on house rent and the balance on food. If
he spends Rs.300 on petrol then what is the expenditure on
house rent? ans: 175

17) If the numerator of a fraction is increased by 25% and
denominator decreased by 20%, the new value is 5/4. What is
the original value? ans:4/5
18) The length of a rectangle is increased by 60%. By what %
would the width have to be decreased to maintain the same
area? ans:37.5%
19) The value of ¾ + 5 / 36 + 7 / 144 + …….+17 / 5184 + 19
/ 8100 ans:0.99
20) A sporting goods store ordered an equal number of white
and yellow balls. The tennis ball company delivered 45 extra
white balls, making the ratio of white balls to yellow balls
1/5 : 1/6. How many white tennis balls did the store
originally order for? ans: 225
21) A student's grade in a course is determined by 6 quizzes
and one examination. If the examination counts thrice as
much as each of the quizzes, what fraction of final grade is
determined by the examination? ans:1/3
22) A sum of money is divided among A, B and C such that for
each rupee A gets, B gets 65paise and C gets 35paise. If C's
share is Rs.560, the sum is … ? ans:3200
23) Joe's father will be twice his age 6 years from now. His
mother was twice his age 2 years before. If Joe will be 24
two years from now, what is the difference between his
father's and mother's age? ans:8
24) A traveler walks a certain distance. Had he gone half a
kilometer an hour faster \, he would have walked it in 4/5
of the time, and had he gone half a Kilometer an hour
slower, he would have walked 2 ½ hr longer. What is the
distance? ans:15kms
25) Two oranges, 3 bananas and 4 apples cost Rs.15. 3
oranges, 2 bananas and 1 apple cost Rs.10. I bought 3
oranges, 3 bananas and 3 apples. How much did I pay? ans:15
26) A report consists of 20 sheets each of 55 lines and each
such line consists of 65 characters. This report is retyped
into sheets each of 65 lines such that each line consists of
70 characters. The % reduction in the number of sheets is
closest to. ans:20
27) A ship leaves on a long voyage. When it is 18 miles from
the shore, a seaplane, whose speed is 10 times that of the
ship is sent to deliver mail. How far from the shore does
the seaplane catch upon with the ship? ans:20 miles
28) Anand finishes a work in 7 days; Bittu finishes the same
job in 8 days and Chandu in 6 days. They take turns to
finish the work. Anand on the first day, Bittu on the second
and Chandu on the third day and then Anand again and so on.
On which day will the work get over? ans:7th day
29) 3 men finish painting a wall in 8 days. Four boys do the
same job in 7 days. In how many days will 2 men and 2 boys
working together paint two such walls of the same size?
ans:12 12/13 day
30) There are 5 distinct pairs of white socks and 5 pairs of
black socks in a cupboard. In the dark, how many socks do I
have to pull out to ensure that I have at least 1 correct
pair of white socks? ans:6 pairs or 12 socks
31) In a circular racetrack of length 100 m, three persons
A, B and C start together. A and B start in the same
direction at speeds of 10 m/s and 8 m/s respectively. While
C runs in the opposite at 15 m/s, when will all the three
meet for the first time on the track after the start? ans:
aft 100 s
32) If the distance traveled (s) in time (t) by a particle
is given by the formula s = 1+ 2t+3t2+4t3, then what is the
distance traveled in the 4th second of its motion? ans:171m
33) There is a circular pizza with negligible thickness that
is cut into 'x' pieces by 4 straight line cuts. What is the
maximum and minimum value of 'x' respectively? ans:11,5
34) When ¾ of a unit's digit is added to the ten's digit of
a two number, the sum of the digits becomes 10. If ¼ of the
ten's digit added to the unit's digit, then the sum of the
digits is 1 less than the previous. Find the number. ans: 48
35) LCM of x and y is 36 and HCF of x and y is 4. If x = 4
then what is ¼th value of y? ans:9
36) Amal bought 5 pens, 7 pencils and 4 erasers. Rajan
bought 6 pens, 8 erasers and 14 pencils for an amount, which
was half more than what Amal had paid. What % of the total
amount paid by Amal was paid for pens? ans: 62.5%
37) A non-stop bus to Amritsar overtakes an auto also moving
towards Amritsar at 10 am. The bus reaches Amritsar at 12.30
pm and starts on the return journey after 1 hr. On the way
back it meets the auto at 2 pm. At what time the auto will
reach Amritsar? ans:3 pm
38) The total expense of a boarding house is partly fixed
and partly variable with the number of boarders. The charge
is Rs.70 per head when there are 25 boarders and Rs.60 when
there are 50 boarders. Find the charge per head when there
are 100 boarders. ans:55
39) How many positive integer solutions does the equation
2x+3y = 100 have? ans:16
40) A person had to multiply two numbers. Instead of
multiplying by 35, he multiplied by 53and the product went
up by 540. What was the raised product? ans:1590
41. In a two-dimensional array, X (9, 7), with each element
occupying 4 bytes of memory, with the address of the first
element X (1, 1) is 3000; find the address of X (8, 5). ans:3212

42. In the word ORGANISATIONAL, if the first and second,
third and forth, forth and fifth, fifth and sixth words are
interchanged up to the last letter, what would be the tenth
letter from right? ans: I

43. What is the largest prime number that can be stored in
an 8-bit memory? ans:251

44. Select the odd one out. a. Java b. Lisp c. Smalltalk d.
Eiffel. ans: d

45. Select the odd one out a. SMTP b. WAP c. SAP d. ARP ans:c

46. Select the odd one out a. Oracle b. Linux c. Ingress d.
DB2 ans:b

47. Select the odd one out a. WAP b. HTTP c. BAAN d. ARP ans:c

48. Select the odd one out a. LINUX b. UNIX c. SOLARIS d.
SQL SEVER ans:d

49. Select the odd one out a. SQL b. DB2 c. SYBASE d. HTTP ans:d

50. The size of a program is N. And the memory occupied by
the program is given by M = square root of 100N. If the size
of the program is increased by 1% then how much memory now
occupied? ans: 0.5%

51. A man, a woman, and a child can do a piece of work in 6
days. Man only can do it in 24 days. Woman can do it in 16
days and in how many days child can do the same work? ans: 16

52. In which of the system, decimal number 184 is equal to
1214? ans:5

53. Find the value of the 678 to the base 7. ans:1656

54. Number of faces, vertices and edges of a cube ans:6 8 12

55. Complete the series 2, 7, 24, 77,__ ans:238

56. Find the value of @@+25-++@16, where @ denotes "square"
and + denotes "square root". ans:621

57. Find the result of the following expression if, M
denotes modulus operation, R denotes round-off, T denotes
truncation: M(373,5)+R(3.4)+T(7.7)+R(5.8) ans:19

58. If TAFJHH is coded as SBEKGI then RBDJK can be coded as
---- ans: QCCKJ

59. G(0)= -1, G(1)=1, G(N)=G(N-1) - G(N-2), G(5)= ? ans:-2

60. What is the max possible 3 digit prime number? ans:997

61. A power unit is there by the bank of the river of 750
meters width. A cable is made from power unit to power a
plant opposite to that of the river and 1500mts away from
the power unit. The cost of the cable below water is Rs.
15/- per meter and cost of cable on the bank is Rs.12/- per
meter. Find the total of laying the cable. ans:20250

62. In Madras, temperature at noon varies according to
-t^2/2 + 8t + 3, where t is elapsed time. Find how much
temperature more or less in 4pm to 9pm. ans:7.5 more

63. The size of the bucket is N kb. The bucket fills at the
rate of 0.1 kb per millisecond. A programmer sends a program
to receiver. There it waits for 10 milliseconds. And
response will be back to programmer in 20 milliseconds. How
much time the program takes to get a response back to the
programmer, after it is sent? ans:30 ms

64. If the vertex (5,7) is placed in the memory. First
vertex (1,1) `s address is 1245 and then address of (5,7)
is ---------- ans:1279

65. Which of the following are orthogonal pairs? a. 3i+2j b.
i+j c. 2i-3j d. -7i+j ans:a&c

66. If VXUPLVH is written as SURMISE, what is SHDVH? ans:PEASE

67.If A, B and C are the mechanisms used separately to
reduce the wastage of fuel by 30%, 20% and 10%. What will be
the fuel economy if they were used combined. Ans:49.6%

68.Which of the following is power of 2? a. 2068 b.2048
c.2668 ans:2048

69.mplete the series. 3, 8, --, 24, --, 48, 63. ans:15,35

70.Complete the series. 4, -5, 11, -14, 22, ? ans:-27

71. B and C are 8 bit no's. They are as follows:
A 1 1 0 1 1 0 1 1
B 0 1 1 1 1 0 1 0
C 0 1 1 0 1 1 0 1
Find ( (A-B) u C )=? ans:109

72.A can copy 50 papers in 10 hours while both A & B can
copy 70 papers in 10 hours. Then for how many hours required
for B to copy 26 papers? ans:13

73. A is twice efficient than B. A and B can both work
together to complete a work in 7 days. Then find in how many
days A alone can complete the work? ans:10.5 days

74.A can finish a work in 10 days. B is 60% efficient than
A. How days does B take to finish the work? ans:6 ¼ days

75. A finishes the work in 10 days & B in 8 days
individually. If A works for only 6 days then how many days
should B work to complete A's work? ans: 3.2 days


76.Given the length of the 3 sides of a triangle. Find the
one that is impossible? ans:B

a) 2,3,3.5 b) 1,5,7 c) 5,2,4.

77.Find the singularity matrix from a given set of matrices?

a) 0 1 b) 1 1 c) 1 0
1 0 0 0 0 1 ans:B

78. 2D array is declared as A[9,7] and each element requires
2 byte. If A[ 1,1 ] is stored in 3000. Find the memory of
A[8,5]? ans:3106

79. (a) 2+3i (b)1+i (c) 3-2i (d) 1-7i .Find which of the
above is orthogonal. ans:a&c

80.(Momentum*Velocity)/(Acceleration * distance ) find
units. ans: mass

81. The number 362 in decimal system is given by (1402) x in
the X system of numbers find the value of X ans: 6
a) 5 b) 6 c) 7 d) 8 e) 9

82. Given $ means Tripling and % means change of sign then
find the value of $%$6-%$%6
ans: -72

83. My flight takes of at 2am from a place at 18N 10E and
landed 10 Hrs later at a place with coordinates 36N70W. What
is the local time when my plane landed.
a) 6:00 am b) 6:40am c) 7:40 d) 7:00 e) 8:00
ans: 4 hrs

84. Find the highest prime number that can be stored in an
8bit computer. ans:253

85. Which of the following set of numbers has the highest
Standard deviation?
1,0,1,0,1,0
-1,-1,-1,-1,-1,-1
1,1,1,1,1,1
1,1,0,-1,0,-1 ans: D
86. A family, planning a weekend trip, decides to spend not
more than a total of 8 hours driving. By leaving early in
the morning, they can average 40 miles per hour on the way
to their destination. Due to the heavy Sunday traffic, they
can average only 30 miles per hour on the return trip. What
is the farthest distance from home they can plan to go? ans: B
(a) 120 miles or less (b) Between 120and 140 miles (c) 140
miles (d) Between 140 and 160 miles (e) 160 miles or more
87. A car is filled with four and half gallons of fuel for a
round trip. If the amount of fuel taken while going is 1/4
more than the amount taken for coming, what is the amount of
fuel consumed while coming back? ans: 2 gallons
(a) Less than 2 gallons (b) 2 gallons
(c) 2 1/2 gallons (d) 3 gallons
(e) More than 3 gallons

88. A 3-gallon mixture contains one part S and two parts R.
In order to change it to a mixture containing 25% S, how
much R should be added? ans: 1 gallon
(a) 1/2 gallon (b) 2/3 gallon (c)
3/4 gallon (d) 1 gallon (e) 1 1/2 gallon

89. A tree grows only 3/5 as fast as the one beside it. In
four years the combined growth of the two trees is eight
feet. How much does the shorter tree grow in two years? ans:
1 ½ feet
(a) Less than 2 feet (b) 2 feet (c) 1 1/2 feet (d) 3feet
(e) more than 3 feet.
90. Wind flows at 160 miles in 330 minutes, for traveling 80
miles how much time does it require? ans: 2 hrs 45 mins
(a)1 hour30minutes (b)1
hour 45 minutes
(c) 2 hours
(d)2 hours 45minutes (e)3
hours

91. A stationary engine has enough fuel to run 12 hours when
its tank is 4/5 full. How long will it run when the tank is
1/3 full? ans: 5 hrs
(a) Less than 2 hours (b) 2 hours (c) 3 hours
(d) 4 hours (e) 5 hours
92. If A is traveling at 72 km per hour on a highway. B is
traveling at a speed of 25 meters per second on a highway.
What is the difference in their speeds in meters per second?
ans: 5 m/s
(a) 1/2 m/sec (b) 1 m/sec
(c) 1 1/2 m/sec (d) 2 m/sec (e) 3 m/sec
93. A salesperson by mistake multiplied a number and got the
answer as 3, instead of dividing the number by 3. What is
the answer he should have actually got? ans:1/3
(a) 0 (b) 1/3
(c) 1 (d) 2 (e) 3
94. If the length of a rectangle is increased by 30% and the
width is decreased by 20%, then the area is increased by...
ans:4%
(a) 10% (b) 5% (c)
4% (d) 20% (e) 25%

95. In the class of 40 students, 30 speak Hindi and 20 speak
English. What is the lowest possible number of students who
speak both the languages? ans:10
(a) 5 (b) 20 (c) 15
(d) 10 (e) 30

96. The most economical prices among the following prices is:
(a) 10 kilo for Rs.160
(b) 2 kilo for Rs.30
(c) 4 kilo for Rs.70
(d) 20 kilo for Rs.340
(e) 8 kilo for Rs.130
ans: B
97. A truck contains 150 small packages, some weighing 1 kg
each and some weighing 2 kg each. how many packages weighing
2 kg each are in the truck if the total weight of all the
packages is 264 kg? ans:114
(a) 36 (b) 52
(c) 88 (d) 124
(e) 114
98. A man was arrested for exceeding the speed limit by 10
miles an hour. A second man was charged with exceeding the
same limit by twice as much. The second man was driving 35
miles per hour. What was the speed limit? ans:15 miles per hour
(a) 10 miles per hour
(b) 15 miles per hour (c) 20 miles per hour
(d) 25 miles per hour (e) 30 miles per hour

99. One year ago Pandit was three times his sister's age.
Next year he will be only twice her age. How old will Pandit
be after five years? ans:12 yrs
(a) 8 (b) 12
(c) 11 (d) 13
(e) 15
100. If two pencils cost 8 cents, then how much do 5 pencils
cost? ans:20 cents
(a) 18 cents (b) 20cents (c)
22 cents (d) 23 cents (e) 24cents



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