**New Year Riddle - 31 December**

Why did Navjot Singh sidhu put the new January calendar in the freezer

**For Solution :**Click Here

This Blog is a collection of brain teasers, puzzles (maths,fun,brain etc), riddles,Questions, Quiz.

Why did Navjot Singh sidhu put the new January calendar in the freezer

Difficulty ★★★★☆ Popularity ★★★☆☆

As they say, beggars can't be choosers, in fact begger take what they can get. A begger on the street can make one cigarette out of every 6 cigarette butts he finds. After one whole day of searching and checking public ashtrays the begger finds a total of 72 cigarette butts. How many cigarettes can he make and smoke from the butts he found?

14

If the begger can make a whole cigarette from 6 butts then he can make 12 cigarettes from the 72 he found. Once he smokes those, he then will have another 12 butts, which gives him enough to make another 2 cigarettes. A total of 14.

Difficulty ★★★★☆ Popularity ★★★★☆

At a party, everyone shook hands with everybody else. There were 66 handshakes. How many people were at the party?

12

In general, with n+1 people, the number of handshakes is the sum of the first n consecutive numbers: 1+2+3+ ... + n.

Since this sum is n(n+1)/2, we need to solve the equation n(n+1)/2 = 66.

This is the quadratic equation n2+ n -132 = 0. Solving for n, we obtain 11 as the answer and deduce that there were 12 people at the party.

Since 66 is a relatively small number, you can also solve this problem with a hand calculator. Add 1 + 2 = + 3 = +... etc. until the total is 66. The last number that you entered (11) is n.

Difficulty ★★★★★ Popularity ★★☆☆☆

The Puzzle: Here is a famous prize problem that Sam Loyd issued in 1882, offering $1000 as a prize for the best answer showing how to arrange the seven figures and the eight 'dots' .4.5.6.7.8.9.0. which would add up to 82

The dot over a number signifies that it is a repeater which would go on for ever, as when we endeavor to describe 1/3 decimally as 0.33333 . . . . (etc) With a series of numbers we place the dot over the first and last, as with 0.97979797979 . . . (etc) The remarkable feature being that a proper fraction divided by 9s e.g. 46/99 is exactly equal to the numerator with the repeater sign followed by the decimal.

Difficulty ★★★★☆ Popularity ★★★☆☆

I know a way by which i can make i can get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.

Do you ?

(0!+0!+0!+0!+0!)!

=(1+1+1+1+1)!

=(4)!

=5! is 5*4*3*2*1=120

Difficulty ★★★★☆ Popularity ★★★☆☆

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

3211000

Difficulty ★★★★☆ Popularity ★★★★★

2+3=8,

3+7=27,

4+5=32,

5+8=60,

6+7=72,

7+8=??

Solve it?

2+3=2*[3+(2-1)]=8

3+7=3*[7+(3-1)]=27

4+5=4*[5+(4-1)]=32

5+8=5*[8+(5-1)]=60

6+7=6*[7+(6-1)]=72

therefore

7+8=7*[8+(7-1)]=98

x+y=x[y+(x-1)]=x^2+xy-x

Difficulty ★★★★☆ Popularity ★★★☆☆

My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years ?

I am 72 years old.

Let m be my age in years. If s is my son's age in years, then my son is 52s weeks old. If g is my grandson's age in years, then my grandson is 365g days old. Thus,

365g = 52s.

Since my grandson is 12g months old,

12g = m.

Since my grandson, my son and I together are 120 years,

g + s + m = 120.

The above system of 3 equations in 3 unknowns (g, s and m) can be solved as follows.

m / 12 + 365 m / (52 x 12) + m = 120 or

52 m + 365 m + 624 m = 624 x 120 or

m = 624 x 120 / 1041 = 72.

So, I am 72 years old.

Difficulty ★★★★☆ Popularity ★★★★☆

Can you arrange four 9's and use of atmost 2 math symbols , make the total be 100?

99 / .99

Difficulty ★★★★☆ Popularity ★★★★☆

You can place weights on both side of weighing balance and you need to measure all weights between 1 and 1000. For example if you have weights 1 and 3,now you can measure 1,3 and 4 like earlier case, and also you can measure 2,by placing 3 on one side and 1 on the side which contain the substance to be weighed. So question again is how many minimum weights and of what denominations you need to measure all weights from 1kg to 1000kg.

For this answer is 3^0, 3^1, 3^2... That is 1,3,9,27,81,243 and 729.

Difficulty ★★★★☆ Popularity ★★★★★

Using eight eights and addition only, can you make 1000?

888 + 88 + 8 + 8 + 8 = 1000

British Police inspects a room where there is no windows,no doors,no tables and is almost empty expect there is just a puddle of water. They found a dead women who obviously hung herself from the ceiling, but they are not able to figure out how this had happen.

Sherlock and John Watson entered the crime scene and easily able to solve the case.

How did the women die ?

Can you get a sum of 1000 using sixteen 4s and only an addition operator

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

On Christmas , A beggar earns 71 rupees in form of 20-paisa and 25-paisa.

He collects total of 324 coins.

Can you tell me how many number of 20-paisa and 25-paisa he got ?

Which alphabet letter is a question ?

Difficulty ★★★☆☆ Popularity ★★★★★

A donkey travels the exact same distance daily.

strangely 2 of his legs travels 40 kilometers and the remaining two travels 41 kilometers.

Obviously 2 donkey legs cannot be a 1km ahead of the other 2.

The donkey is perfectly normal. So how come this be true ?

The donkey is moving in circular path and hence outside legs travels more distance than inner legs

Difficulty ★★★☆☆ Popularity ★★★★★

I have two rectangular wires.

Both of them have property that when i light the fire from one end , it will take 60 minutes to get completely burn.

However they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes).

So how could i measure 45 minutes ?

Steps:

A) burn 1st wire from both end and 2nd wire from one end

B) After 30 minutes(when 1st wire gets completely burned out) , burn the second wire from 2nd end as well

C) when 2nd run completely gets burned , you know its 45 minutes.

Difficulty ★★★☆☆ Popularity ★★★★★

Two prisoners 'Lincoln Burrows' and 'Michael Scofield' are locked in a cell.

There is open window approx 30 feet above the ground of the cell.

They are never able to reach there.

Then they plan to escape by a tunnel and they start digging out.

After digging for more than 20 days, Scofield comes with the different plan and they escaped.

what was the plan ?

They use the dirt and bricks from the tunnel and stand on it then one on top of the other.

Difficulty ★★★☆☆ Popularity ★★★★★

The host of a game show, offers the guest a choice of three doors. Behind one is a expensive car, but behind the other two are goats.

After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

You better switch!

Your first choice has a 1/3 chance of having the car, and that does not change.

The other two doors HAD a combined chance of 2/3, but now a Goat has ben revealed behind one, all the 2/3 chance is with the other door.

Difficulty ★★★☆☆ Popularity ★★★★★

Queen Elizabeth organized a royal party.

To Avoid uninvited guest royal family set a password.

Wayne (an uninvited person) plan to enter the party. He stand nearby the door.

First guest comes, the security person said 'twelve' and guest replied with six.

Second guest comes , the security person said 'six' and guest replied with 'three'.

Wayne thought is enough and he walked to the entry point. The security person said 'eight' , Wayne replied smilingly 'four'.

He was immediately thrown out of the party.

why ?

'five'

password is not half , rather the sum of digit.

Difficulty ★★☆☆☆ Popularity ★★★★★

Suarez is a strange liar.

He lies on six days of the week, but on the seventh day he always tells the truth.

He made the following statements on three successive days:

Day 1: 'I lie on Monday and Tuesday.'

Day 2: 'Today, it's Thursday, Saturday, or Sunday.'

Day 3: 'I lie on Wednesday and Friday.'

On which day does Suarez tell the truth?

Tuesday

We know that Suarez tells the truth on only a single day of the week. If the statement on day 1 is untrue, this means that he tells the truth on Monday or Tuesday. If the statement on day 3 is untrue, this means that he tells the truth on Wednesday or Friday. Since Suarez tells the truth on only one day, these statements cannot both be untrue. So, exactly one of these statements must be true, and the statement on day 2 must be untrue.

Assume that the statement on day 1 is true. Then the statement on day 3 must be untrue, from which follows that Suarez tells the truth on Wednesday or Friday. So, day 1 is a Wednesday or a Friday. Therefore, day 2 is a Thursday or a Saturday. However, this would imply that the statement on day 2 is true, which is impossible. From this we can conclude that the statement on day 1 must be untrue.

This means that Suarez told the truth on day 3 and that this day is a Monday or a Tuesday. So day 2 is a Sunday or a Monday. Because the statement on day 2 must be untrue, we can conclude that day 2 is a Monday.

So day 3 is a Tuesday. Therefore, the day on which Suarez tells the truth is Tuesday.

Difficulty ★★★☆☆ Popularity ★★★★★

I can prove why 1 = 2

* Lets say y = x

* Multiply through by x xy = x2

* Subtract y2 from each side xy - y2 = x2 - y2

* Factor each side y(x-y) = (x+y)(x-y)

* Divide both sides by (x-y) y = x+y

* Divide both sides by y y/y = x/y + y/y

* And so... 1 = x/y + 1

* Since x=y, x/y = 1 1 = 1 + 1

* And so... 1 = 2

How is this possible ?

Step 5 is invalid, because we are dividing by (x-y), and since x=y, we are thus dividing by 0. This is an invalid mathematical operation (division by 0), and so by not following basic mathematical rules

Difficulty ★★★☆☆ Popularity ★★★★★

At a restaurant downtown, Mr. Red, Mr. Blue, and Mr. White meet for lunch. Under their coats they are wearing either a red, blue, or white shirt.Mr. Blue says, 'Hey, did you notice we are all wearing different colored shirts from our names?' The man wearing the white shirt says, 'Wow, Mr. Blue, that's right!'

Can you tell who is wearing what color shirt?

Blue could only be wearing white or red and we know that there is already someone else wearing the white shirt so Mr. Blue could only be wearing the red shirt.

Mr. White could have only been wearing a blue or a red shirt, and red is already taken, so Mr. White is wearing a blue shirt.

Mr. Red now has to be wearing a white shirt.

Difficulty ★★★☆☆ Popularity ★★★★★

Baseball bat and ball cost $50. If the bat cost $49 more than the ball, what is the cost of each

bat $49.50, ball $0.50

Difficulty ★★★★☆ Popularity ★★★★★

The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its color and put it back into the box, without seeing the color of the other ball.

How many such operations are necessary to correctly label the boxes?

Just One!

Because we know all labels are wrong.

So the BW box must be either BB or WW. Selecting one ball from BW will let you know which.

And the other two boxes can then be worked out logically.

Neha was born in 1855.She just had her 30th birth day today.

how did that happen ?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *

x *

=====

* * *

I organized a small get together at my home.

In the party , i have a barrel with some whiskey in it.

Suddenly Guest 1 say 'I bet this barrel of whiskey is more than half full'.

'No, its less than half full' Guest 2 replied.

I don't have any measuring instrument and without removing whiskey from it , how can i determine which of the guest is right ?

A octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings.

How many insects do we have of each kind ?

Can you name something which is more useful when broken ?

There is a five letter word which has 3 consonants(all are same) and 2 different vowels.

Also something wrong associated with the word.

Can you name it ?

2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls.

How do they do it?

What does does this rebus picture means ?

In Sahara desert , 3 men found a big 24L Jar is full of water. Since there is shortage of water so they decided to distribute the water among themselves such that they all have equal amounts of it. But they only have a 13L, a 5L and an 11 liter Jar.

How do they do it?

There is a bag which have 21 blue balls and 23 red balls. You also have 22 red balls outside the bag.

Randomly remove two balls from the bag.

* If they are of different colors, put the blue one back in the bag.

* If they are the same color, take them out and put a red marble back in the bag.

Repeat this until only one marble remains in the bag.

What is the color of the sole marble left in the bag ?

What Does this tex means

important=important

I know a 5 digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number ?

Bill McFarland world's most popular thief was caught stealing.Because of his popularity,The judge give him a strange punishment.He order him to sentenced to death but he can choose his own way to die.

What way of death Bill McFarland must choose ?

You Throw The Outside, Cook The Inside

Eat The Outside , Throw The Inside.

What Is It ?

MOUNT MOUNT MOUNT MOUNT MOUNT

MOUNT MOUNT MOUNT MOUNT MOUNT

What does this rebus means ?

A donkey travels the exact same distance daily.

strangely 2 of his legs travels 40 kilometers and the remaining two travels 41 kilometers.

Obviously 2 donkey legs cannot be a 1km ahead of the other 2.

The donkey is perfectly normal. So how come this be true ?

On a dark night Harish and Priyanka were sitting together. Harish was watching movie while his wife Priyanka was reading mystery book.Suddenly the power went out and Harish decided to go to bed, but strangely Priyanka kept on reading.

There was no artificial light around, Priyanka kept on reading.

How come ?

Subscribe to:
Posts (Atom)

Difficulty Level 3/5
(756)
Logic Puzzles
(501)
Difficulty Level 4/5
(482)
Riddles
(367)
Difficulty Level 2/5
(358)
Maths Puzzles
(353)
Picture Puzzles
(353)
Trick Teasers
(290)
Popular Puzzles
(221)
Rebus Puzzles
(159)
Humor Puzzles
(153)
Interview Puzzle
(129)
Series Puzzles
(129)
What Word Am I
(100)
Difficulty Level 1/5
(90)
Equation Puzzles
(79)
Trivia
(78)
Mystery Puzzles
(74)
Difficulty level 5/5
(57)
Who Am I
(45)
Murder Mystery Puzzles
(44)
Square Count
(40)
Probability Puzzles
(39)
Algebra
(36)
IAS-EXAMS
(34)
Cipher Puzzles
(32)
Science Puzzles
(30)
Situation Puzzles
(28)
MatchSticks-Riddles
(22)
Puzzles of Age
(21)
Google Interview Puzzle
(18)
Read Between Lines Puzzles
(18)
statement
(17)
Microsoft Interview Puzzles
(16)
Time Distance Problem
(14)
Odd One Out
(13)
Relationship Puzzles
(12)
Cards
(10)
Story Puzzles
(10)
Paradox Puzzles
(9)
Classic
(6)
Directional Puzzles
(6)
Best Of 2011
(5)
clever
(5)
Brain-Twister
(4)
Mind Games
(4)
chess
(4)
Analytical
(3)
What Does This Text Mean
(3)
CHALLENGING
(2)
Double Meaning
(2)
Acronym
(1)
Measure
(1)
Suduko
(1)
Video Riddle
(1)
coin-Puzzles
(1)
m
(1)
pop
(1)
triv
(1)