HCL Placement Paper Puzzles 2010
1.
Raju having some coins want to distribute to his 5 son , 5 daughter and
driver in a manner that , he gave fist coin to driver and 1/5 of
remaining to first son he again gave one to driver and 1/5 to 2nd son
and so on…. at last he equally distributed all the coins to 5 daughters.
how many coins raju initially have???
Ans:-881
Ans:-881
2. a painter went in a exhibition
to purchases some pictures where T,U,V,W,X,Y,Z pictures were remaining ,
he want to buy only five in the condition on that
if T is there then X should not be there,
if U is there than y should be there
if if v is there then X should be there
which is the combination the painter can have
(a) T,U,V,W,Y
(b)T,Z,U,W,X
(c)T,X,U,V,W
(d)T,U,Y,W,Z
Ans (d)
if T is there then X should not be there,
if U is there than y should be there
if if v is there then X should be there
which is the combination the painter can have
(a) T,U,V,W,Y
(b)T,Z,U,W,X
(c)T,X,U,V,W
(d)T,U,Y,W,Z
Ans (d)
3. There are 100 men in town. Out
of which 85% were married, 70% have a phone, 75% own a car, 80% own a
house. What is the maximum number of people who are married, own a
phone, own a car and own a house ? ( 3 marks)
Sol: 15%
Sol: 15%
4. There are 10 Red, 10 Blue, 10
Green, 10 Yellow, 10 White balls in a bag. If you are blindfolded and
asked to pick up the balls from the bag, what is the minimum number of
balls required to get a pair of at least one colour ? ( 2 Marks)
Sol :6 balls.
Sol :6 balls.
5. Triplet who usually wear same
kind and size of shoes, namely, Annie, Danny, Fanny. Once one of them
broke a glass in kitchen and their shoe prints were there on floor of
kitchen. When their mother asked who broke Annie said, ?I didn’t do it?;
Fanny said ?Danny did it?; Danny said ?Fanny is lying?; here two of
them are lieing, one is speaking truth. Can you find out who broke it ?
(3 Marks)
Sol : Annie
Sol : Annie
6. 4 players were playing a card
game. Cards had different colours on both sides. Neither of cards had
same colour on both sides. Colors were 2 Red, 2 Blue, 2 Green, 2 Yellow.
Cards were lying in front of each player. Now, each player knew the
colour on other side of his card. They are required to tell their
colour. Statement given by each of them was :
Annie : Blue or Green
Bobby : Neither Blue nor Green
Cindy : Blue or Yellow
Danny : Blue or Yellow
colors of cards that are visible to all were Red, Blue, Green, Blue in order of their names. Exactly two of them are telling truth and exactly two of them are lieing. Can you tell the colour on other face of card for each player ? (6 Marks)
Sol : Annie : Yellow (Lying)
Bobby : Yellow (Telling truth)
Cindy : Blue (Telling truth)
Danny : Green (Lieing)
Annie : Blue or Green
Bobby : Neither Blue nor Green
Cindy : Blue or Yellow
Danny : Blue or Yellow
colors of cards that are visible to all were Red, Blue, Green, Blue in order of their names. Exactly two of them are telling truth and exactly two of them are lieing. Can you tell the colour on other face of card for each player ? (6 Marks)
Sol : Annie : Yellow (Lying)
Bobby : Yellow (Telling truth)
Cindy : Blue (Telling truth)
Danny : Green (Lieing)
7. In a game i won 12 games, each game if i loose i will give u one chocolate, You have 8 chocolates how many games played.
Ans : 32
Ans : 32
8. 75 persons Major in physics, 83
major in chemistry, 10 not at major in these subjects u want to find
number of students majoring in both subjects
Ans 68.
Ans 68.
9. if A wins in a race against B
by 10 mts in a 100 Meter race. If B is behind of A by 10 mts. Then they
start running race, who will won?
Ans .A
Ans .A
10. A+B+C+D=D+E+F+G=G+H+I=17
given A=4.Find value of G and H?
Ans : G = 5 E=1
given A=4.Find value of G and H?
Ans : G = 5 E=1
11. One guy has Rs. 100/- in hand.
He has to buy 100 balls. One football costs Rs. 15/, One Cricket ball
costs Re. 1/- and one table tennis ball costs Rs. 0.25 He spend the
whole Rs. 100/- to buy the balls. How many of each balls he bought?
Ans :F=3,T=56,C=41
Ans :F=3,T=56,C=41
12. The distance between Station
Atena and Station Barcena is 90 miles. A train starts from Atena towards
Barcena. A bird starts at the same time from Barcena straight towards
the moving train. On reaching the train, it instantaneously turns back
and returns to Barcena. The bird makes these journeys from Barcena to
the train and back to Barcena continuously till the train reaches Barcena. The bird finally returns to Barcena and rests. Calculate the total distance in miles the bird travels in the following two cases:
(a) The bird flies at 90 miles per hour and the speed of the train is 60 miles per hour.
(b) the bird flies at 60 miles per hour and the speed of the train is 90 miles per hour
Ans: time of train=1hr.so dist of bird=60*1=60miles
the train and back to Barcena continuously till the train reaches Barcena. The bird finally returns to Barcena and rests. Calculate the total distance in miles the bird travels in the following two cases:
(a) The bird flies at 90 miles per hour and the speed of the train is 60 miles per hour.
(b) the bird flies at 60 miles per hour and the speed of the train is 90 miles per hour
Ans: time of train=1hr.so dist of bird=60*1=60miles
13. A tennis championship is played on a knock-out basis, i.e., a player is out of the tournament when he loses a match.
(a) How many players participate in the tournament if 15 matches are totally played?
(b) How many matches are played in the tournament if 50 players totally participate?
Ans: (a)16
(b)49
(a) How many players participate in the tournament if 15 matches are totally played?
(b) How many matches are played in the tournament if 50 players totally participate?
Ans: (a)16
(b)49
14. When I add 4 times my age 4
years from now to 5 times my age 5 years from now, I get 10 times my
current age. How old will I be 3 years from now?
Ans: Age=41 years.
Ans: Age=41 years.
15. A rich merchant had collected
many gold coins. He did not want anybody to know about them. One day,
his wife asked, “How many gold coins do we have?” After pausing a
moment, he replied, “Well! If I divide the coins into two unequal
numbers, then 37 times the difference between the two numbers equals the
difference between the squares of the two numbers.” The wife looked
puzzled. Can you help the merchant’s wife by finding out how many gold R
Ans:37
Ans:37
16. A set of football matches is
to be organized in a “round-robin” fashion, i.e., every participating
team plays a match against every other team once and only once. If 21
matches are totally played, how many teams participated?
Ans :7
Ans :7
17. Glenn and Jason each have a
collection of cricket balls. Glenn said that if Jason would give him 2
of his balls they would have an equal number; but, if Glenn would give
Jason 2 of his balls, Jason would have 2 times as many balls as Glenn.
How many balls does Jason have?
Ans: 14
Ans: 14
18. Suppose 8 monkeys take 8 minutes to eat 8 bananas.
a) How many minutes would it take 3 monkeys to eat 3 bananas?
(b) How many monkeys would it take to eat 48 bananas in 48 minutes
Ans: a)48
B)6
a) How many minutes would it take 3 monkeys to eat 3 bananas?
(b) How many monkeys would it take to eat 48 bananas in 48 minutes
Ans: a)48
B)6
19. It was vacation time, and so I
decided to visit my cousin’s home. What a grand time we had! In the
mornings, we both would go for a jog. The evenings were spent on the
tennis court. Tiring as these activities were, we could manage only one
per day, i.e., either we went for a jog or played tennis each day. There
were days when we felt lazy and stayed home all day long. Now, there
were 12 mornings when we did nothing, 18 evenings when we stayed at
home, and a total of 14 days when we jogged or played tennis. For how
many days did I stay at my cousin’s place?
Ans : 22 days
Ans : 22 days
20. A 31? x 31? square metal plate
needs to be fixed by a carpenter on to a wooden board. The carpenter
uses nails all along the edges of the square such that there are 32
nails on each side of the square. Each nail is at the same distance from
the neighboring nails. How many nails does the carpenter use?
Ans :124
Ans :124
21. Given that A,B,C,D,E each represent one of the digits between 1 and 9 and that the following multiplication holds:
A B C D E
X 4
————–
E D C B A
————– what digit does E represent ?
a) 4
b) 6
c) 8
d) 7
Ans: c
A B C D E
X 4
————–
E D C B A
————– what digit does E represent ?
a) 4
b) 6
c) 8
d) 7
Ans: c
22. HCL prototyping machine can make 10 copies every 4 seconds. At this rate, How many copies can the machine make in 6 min.?
a) 900
b) 600
c) 360
d) 240
e) 150
Ans: a
a) 900
b) 600
c) 360
d) 240
e) 150
Ans: a
23. (18)10^2(10^8+10^8) =————– 10^4
a) 2(10)^4
b) 2(10)^6
c) 10^8
d) 2(10)^8
e) 10^10
Ans: b
a) 2(10)^4
b) 2(10)^6
c) 10^8
d) 2(10)^8
e) 10^10
Ans: b
24. Worker W produces n units in 5
hours. Workers V and W, workers independently but at the same time,
produce n units in 2 hours. how long would it take V alone to produce n
units?
a) 1 hr 26 min
b) 1 hr 53 min
c) 2 hr 30 min
d) 3 hr 30 min
e) 3 hr 20 min
Ans: d
a) 1 hr 26 min
b) 1 hr 53 min
c) 2 hr 30 min
d) 3 hr 30 min
e) 3 hr 20 min
Ans: d
25. If taxi fares were Rs 1.00 for
the first 1/5 mile and Rs 0.20 for each 1/5 miles thereafter.The taxi
fare for a 3-mile ride was
(A)Rs 1.56
(B)Rs 2.40
(C)RS 3.00
(D)Rs 3.80
(E)Rs 4.20
Ans :d)Rs 3.80
(A)Rs 1.56
(B)Rs 2.40
(C)RS 3.00
(D)Rs 3.80
(E)Rs 4.20
Ans :d)Rs 3.80
