#21 - Hobbit Riddle
Its something that each of us devours,
Not just us but birds, beats, trees and flowers,
Frets iron and nibbles steel,
Toil hard stones to meal,
Exterminates king, collapse town,
And blows the mountains down.
Time
#22 - Logic Amazon Aptitude Interview Puzzle
In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same color?
We will have to consider the worst scenario which is 12 + 1 = 13.
You will have to pick up 13 balls to be absolute sure that you have at least 4 balls of same color
#23 - Trick Detective Murder Riddle
A couple went on for a climbing trip. But only the husband returned from the vacation and said that his wife slipped off while climbing and died. On investigating, the local sheriff arrested him saying, 'Your travel agent called. You murdered your wife.'
The man did not inform anyone about the trip. Then how did the agent was so sure that it is a murder?
The man bought only one way ticket for his wife whereas he bought two way ticket for himself. It means that he was sure that he will be returning alone.
#24 - Awesome Word Changing Riddle
Can you transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word?
THINK
Replacing N with C
THICK
Replacing H with R
TRICK
Replacing I with A
TRACK
Replacing K with T
TRACT
Replacing C with I
TRAIT
Replacing T with N
TRAIN
Replacing T with B
BRAIN
#25 - Solve My Maths Problem
There has been a house on fire. The fireman is now standing in the middle rung of the ladder and trying to extinguish the fire. He climbs 6 rungs more but the heat and deadly flames make him climb down 10 rungs. When the fire is settling gradually, he climbs 18 rungs and reaches the top of the ladder for better access to the house.
Calculate the number of rungs in the ladder ?
29 rungs
Suppose he is standing on m at first which is the middle rung.
He climbs 6 rungs which makes his position to be m+6.
He climbs down ten rungs which makes his position to be (m+6-10) = m-4
He climbs 18 rungs to reach the top t which makes his position (m-4+18) = m+14
Now, m+14 = t
Which means there are 14 rungs above the middle rung and 14 rungs below the middle rung. Counting the middle rung as well, it makes a total of 29 rungs.
#26 - Mystery Thinking Riddle
A man is surviving on an island along with his friend. They have been starving from four days for food. Suddenly, they find a fisherman. The friend goes with the fisherman in order to catch the fish (if they can find any).
The fisherman returns after some time but he is alone and have some salmon that he had prepared. When asked, the fisherman tells him that his best friend fell off the boat and drowned in the water. Starving for so long, he eats the meal while crying for his friend.
After being rescued, he goes to a diner and orders salmon. When he eats his meal, he jumps commit suicide. Why did he do it?
After tasting the salmon, he realized that what he ate on the island was not salmon but probably the flesh of his best friend.
#27 - Easy Maths Riddle
A man had seven children. Upon receiving his salary, he called all of them. He had $100 with him to give to his children. He decided to start with the youngest child and then give $2 more than each younger child to his next elder child.
For example, if he gives $x to the youngest child, he will give $(x+2) to the next one, $[(x+2) + 2] to the next one and so on.
Can you find out how much did the youngest one receive?
The youngest child received $16.
#28 - Hard Clock Puzzle
A pocket watch is rotated voluntarily. See the picture given with this question. If the colored hands represents the hour, second and minute hands of the watch, can you determine the time? Hint: It's somewhere in the afternoon.
There are sixty marks, so logically each mark is there for a minute.
Now, the hour hand is on a mark when the minute hand is on [0, 12, 24, 36, 48]. When the minute hand is on a mark, the second hand is on noon. But the blue hand cannot be the second hand. (It would be on noonand it would be eighteen minutes past/before a full hour.)
a) Green is on twelve. Red indicates twenty four minutes. Blue indicates forty two [minutes] = 8 + 2/5 [hours] = 8:24
b) Green is on twelve. Red indicates thirty six minutes. Blue indicates eighteen [minutes] = 3 + 3/5 [hours] = 3:36
c) Red is on twelve = 3:36
d) Red is on twelve = 8:24.
Also, keep in mind that the watch can be rotated upside down as well.
#29 - Paradox Brain Teaser
The following sentence is false. The preceding sentence is true.
Are these two sentences true or false?
They are neither. It is a paradox.For first to be true, second must be false which makes the first false as well. Thus it does not work.
#30 - Wise Man Story Riddle
An old man had three sons. He was dying and wanted to leave all his property with his wisest son. So he call all three of them and gives them equal amount of money and asks them to buy something from that money that can fill their living room entirely.
The first son bought straw but due to shortage of money, he was not able to fill the entire room. The second son bought sticks, but again they were not enough to fill the room. But the third son bought two things that filled the room completely.
Can you find out what did he buy?
The third son bought a candle and a matchstick. He lighted the candle with the matchstick and the room was filled completely with light.