Ants moving on stick brain teaser
Ants on a stick may only face and move toward left or right. When two ants meet each other they bounce off and immediately move in the opposite direction maintaining the same speed entire time. When an ant reaches an end of the stick, it falls off.
If on a 1 meter long stick 25 ants are randomly kept which are moving with a constant speed of 1 meter per minute, what is the longest amount of time it could take for them to all fall off?
We can understand this more easily by breaking down the solution. Let’s say there were 2 ants and both started at the end, and meet in the middle, and then turn in opposite directions and then fall off the stick. So both have completed 1/2 + 1/2 = 1 stick and so takes 1 minute.
Similarly we can work out this with 3 ants and putting them randomly and check out what happens in each scenario. In all cases time <= 1 minute.So 1 minute (time taken for 1 ant to cross the stick) is the answer.
Your Answer
More puzzles to try-
Three things which have eyes yet they cannot see riddle
Which three things which have eyes yet they cannot seeRead More »How many balls are there in the picture?
How many balls are there in the picture?Read More »Apply your Logic
Given that (78)^9 = 6 And (69)^4 = 11 Can you find out (99)^2 =? (Note: This is Logical not ...Read More »1 to 9 all digits to be used puzzle
Use digits from 1 to 9 once in such a way that each digit is used in the boxes and ...Read More »Seven-League Boots
Meanwhile, back at the castle, the ogre found that the boots he had picked at random from his dark storeroom ...Read More »Easy Series Puzzle
What is the next number? 77, 49, 36, 18 ?Read More »Summing pairs of numbers to primes
For any even number N, partition the integers from 1 to N into pairs such that the sum of the ...Read More »Strange Visions
It weaken all Person for hours each day. It shows you strange visions while you are away. It takes you ...Read More »Decrypt the Message puzzle
Decrypt the Message carrot fiasco nephew spring rabbit sonata tailor bureau legacy corona travel bikini object happen soften picnic option ...Read More »What is the name of the fourth child?
Jimmy’s mother had 4 children. She named the first Monday. Named the second Tuesday. The third is named Wednesday. What ...Read More »Complete The Star
Find the missing numbers:Read More »Johnson Brothers tricky riddle
There were three Johnson brothers – – Mark Johnson – Mike Johnson – Peter Johnson One of them threw a ...Read More »Picking the larger of two cards
Someone picks, at their will, two cards from a deck of cards. The cards have different numbers, so one is ...Read More »My two tell you who I am
I am 5 letters long. My first two tell you who I am My first 3 could be a medicine ...Read More »Car and Bug Race
There is a circular car race track of 10km. There are two cars, Car A and Car B. And they ...Read More »Easy to Weigh a Fish
Why is it very easy to weigh a fish?Read More »What is x?
8 , 6 , 2 = 4 12 , 5 , 8 = 15 13 , 10 , x ...Read More »Common Names
What do the following words have in common? Vermont, Statuesque, Swedish, Arthur\’s, Africa, Sensation, Misunderstood?Read More »Man is trapped in a room with no door no window riddle
If a man is trapped in a room. There are no doors no windows how did he get out?Read More »Clean bowled one day cricket match
Let’s say that a One Day International Cricket match is going on and every Batsman is getting clean bowled on ...Read More »
