Mind Teasers : Duck Beast The River Puzzle

Difficulty Popularity

A duck sits at the centre point of an impeccably round river. At an edge of the river stands a monstrous beast holding up to eat up the duck. The beast is afraid of water and therefore plan to catch the duck as soon as it reaches the short of the river. The speed of duck is one-fourth of the speed of the beast, moreover the beast always runs in the direction round the shore which brings it closer to the duck the fastest.

Both the duck and the beast can change directions in any given time.

The duck realizes that only chance to escape is to reach the shore without getting caught by the beast and then get into the safe forest lake which is just next to the river.

By what method can the duck successfully escape?
category : MATHS

Suggestions

Mind Teasers : Hard MatchStick Problem

Difficulty Popularity

You can see five identical squares made with blue matchsticks in the given figure. You have to make them six identical squares instead. To do that, you are only allowed to move three matchsticks. How will you achieve the desired result?

Mind Teasers : Sunday Probability Riddle

Difficulty Popularity

Whats the probability of getting 5 Sunday(my favorite day) in a 31 day month ?

Mind Teasers : Funny Brain Twister

Difficulty Popularity

We all know that New Year occurs after a week from Christmas and thus it falls on the same day as of Christmas. But this will not happen in 2050. In 2050, Christmas will appear on Sunday while New Year will appear on Saturday.

How can this be possible ?
category : LOGIC | TRICK

Mind Teasers : Tricky Maths Expression

Difficulty Popularity

By using the numbers 8,5 1 and 1 exactly once and with the help of basic operation (+, -, /, *), Can you form an expression with a value of 10?

Note: Parentheses are allowed
category : MATHS | EQUATION

Mind Teasers : Popular Deductive Logic Problem

Difficulty Popularity

Eight Brothers lives in an old house where there is no electricity and no computers or any any other gadget.

Brother-1: Reading Comics
Brother-2: Playing Chess
Brother-3: Writing
Brother-4: making food for the family
Brother-5: sleeping and snoring
Brother-6: cleaning house
Brother-7: watering the plants


what is Brother-8 doing ?
category : LOGIC | TRICK

Mind Teasers : Maths Magic Riddle

Difficulty Popularity

I can prove why 1 = 2

Step1. Lets say y = x
Step2. Multiply through by x xy = x2
Step3. Subtract y2 from each side xy - y2 = x2 - y2
Step4. Factor each side y(x-y) = (x+y)(x-y)
Step5. Divide both sides by (x-y) y = x+y
Step6. Divide both sides by y y/y = x/y + y/y
Step7. And so... 1 = x/y + 1
Step8. Since x=y, x/y = 1 1 = 1 + 1
Step9. And so... 1 = 2

How is this possible ?

Mind Teasers : Which Tank Will Fill First Brain Teaser

Difficulty Popularity

Famous tank fill brainteaser is shown in the picture below. Can you tell us which tank will fill first?

category : LOGIC | PICTURE

Mind Teasers : Famous 13 Cave Logic Problem

Difficulty Popularity

A thief was running from the police after the biggest theft the town saw. He took his guard in one of the thirteen caves arranged in a circle. Each day, the thief moves either to the adjacent cave or stay in the same cave. Two cops goes there daily and have enough time to enter any two of the caves out of them.

How will the cop make sure to catch the thief in minimum number of days and what are the minimum number of days?
category : LOGIC

Mind Teasers : Awesome Logic Brain Teaser

Difficulty Popularity

Q1. Find out the first question where the right answer is c)
a) Q3
b) Q4
c) Q1
d) Q2

Q2. Find out the first question where the right answer is a)
a) Q4
b) Q2
c) Q3
d) Q1

Q3. Find out the first question where the right answer is d)
a) Q1
b) Q2
c) Q4
d) Q3

Q4. Find out the first question where the right answer is b)
a) Q2
b) Q4
c) Q3
d) Q1
category : LOGIC

Mind Teasers : Popular Probability Brain Teaser

Difficulty Popularity

Kangwa, Rafael and Ferdinand plans for gun fighting.
They each get a gun and take turns shooting at each other until only one person is left.

History suggest
Kangwa hits his shot 1/3 of the time, gets to shoot first.
Rafael, hits his shot 2/3 of the time, gets to shoot next if still living.
Ferdinand having perfect record at shooting(100% accuracy) shoots last , if alive.

The cycle repeats. If you are Kangwa, where should you shoot first for the highest chance of survival?

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