Puzzles Interview Questions |
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120. Sam and Mala have a conversation.
• Sam says I am certainly not over 40
• Mala says I am 38 and you are at least 5 years olderthan me
• Now Sam says you are at least 39
All the statements by the two are false. How old are they really?
Ans:
Mala = 38 yrs, Sam = 41 yrs |
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121. Grass in lawn grows equally thick and in a uniform rate. It takes 24 days for 70 cows and 60 days for 30 cows to eat the whole of the grass. How many cows are needed to eat the grass in 96 days.?.
Ans:
20
[Hint: g - grass at the beginning r -rate at which grass grows, per day y - rate at which
one cow eats grass, per day n - no of cows to eat the grass in 96 days
g + 24*r = 70 * 24* y g + 60*r= 30 * 60 * y g + 96*r = n * 96* y, Solving, n = 20. ] |
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122. There N stations on a railroad. After adding X stations on the rail route 46 additional tickets have to be printed. Find N and X
Ans:
x=2 and N=11 ( Let initially,N(N-1) = t; After adding, (N+X)(N+X-1) = t+46;Trail and error method )
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123. Three criminals were arrested for shop lifting. However, when interrogated only one told the truth in
both his statements, while the other two each told one true statement and one lie. The statements were:
• ALBERT :(a) Chander passed the merchandise. (b)Bruce created the diversion.
• BRUCE :(a) Albert passed the merchandise. (b)I created the diversion.
• CLIVE :(a) I took the goods out of the shop. (b) Bruce passed them over
Ans:
Albert passed the goods. Bruce
created the diversion. Clive took the goods out of the
shop |
124.
Four prisoners escape from a prison. The prisoners, Mr. East, Mr. West, Mr. South, Mr. North
head towards different directions after escaping. The following information of their escape was supplied:
• The escape routes were The North Road, South Road,East Road and West Road.
• None of the prisoners took the road which was theirnamesake.
• Mr. East did not take the South Road
• Mr. West did not the South Road.
• The West Road was not taken by Mr. East
What road did each of the prisoners take to make
their escape?
Ans:
Mr. East took the North Road
Mr. West took the East Road
Mr. North took the South Road
Mr. South took the West Road. |
125. A hotel has two wings, the east wing and the west wing. Some east wing rooms but not all have an ocean view.All west wing rooms have a harbor view. The charge for all rooms is identical, except as follows :
• Extra charge for all harbor view rooms on or above the 3rd floor
• Extra charge for all ocean view rooms except those without balcony
• Extra charge for some harbor rooms on the first two floor & some east wing rooms without ocean view but having kitchen facilities.
Which of the following cannot be determined on the
basis of the information given:
I. Whether there are any rooms without a
balcony for which an extra charge is imposed.
II. Whether any room without a kitchen or
a view involves an extra charge.
III. Whether two extra charges are imposed
for any room.
(A) I only (B) II only
(C) III only (D) II and III only
(E) I, II and III
Ans:
(A) |
