#51 - Popular Card Interview Puzzle

A pack of cards has 40 cards. You are blindfolded. Out of 40, 25 cards are facing down while 15 are facing up. You have been asked to divide this pack of cards into two decks - so that each deck contains an equal number of face up cards. Remember, you are blindfolded.

How will you do it?

Create a new deck of the exactly same number of cards as are face up cards in the original deck.Take 15 number of cards in a new deck and change their face direction. For example- You create a new deck of 15 cards and out of 15, 5 faces up in a new deck. So remaining 10 faces up are in the old deck. But hey! while creating the new deck you reversed the face direction of new cards. So actually the 5 cards which were facing up are actually face down in the new deck while 10 faces up.

#52 - Floating Fish ToothPick Riddle

Below toothpicks/matchsticks indicate the group of fishes moving from west to east direction. Can you make them move from east to west by just moving three toothpicks/matchsticks?

Floating Fish ToothPick Riddle

Solution is indicated in the picture below.

#53 - Popular Japanese Ship Mystery Puzzle

A Japanese ship is sailing in the Indian Ocean. The captain of the ship feels tired and decides to take shower to be rejuvenated. He goes to take the shower after keeping his diamond-studded rolex watch and gold chain on the table.
When he comes back after 15 minutes, he finds them missing. There are 4 crew members on the ship and he call them one by one to ask them what they were doing in that duration.

Following are the answers:
1. Portuguese Guy who is the cook replies that he was cooking mutton for the crew members.
2. Bangladeshi Guy who is a housekeeper tells that he was sleeping in his room.
3. American Guy who is the engineer says that he was checking on the generator.
4. French guy who is another housekeeper says that he was correcting the hoisted flag that was put upside down.

It took only a couple of seconds for the captain to find the thief. Can you find the thief too?

The thief is the French guy. This is because the Japanese flag looks the same upside down.

#54 - Upsc Picture Series Puzzle

Can you solve below logical number series puzzle.

Upsc Picture Series Puzzle

11.3135 + 9.3115+ 9.375

#55 - How Many Balls Pyramid Problem

Can you count the number of balls in picture below?

How Many Balls Pyramid Problem

30 (16+9+4+1).

#56 - Popular Algebraic Equation Puzzle

0 0 0 = 6
1 1 1 = 6
2 2 2 = 6
3 3 3 = 6
4 4 4 = 6
5 5 5 = 6
6 6 6 = 6
7 7 7 = 6
8 8 8 = 6
9 9 9 = 6

You can use any mathematical symbols in the space provided to make all above algebraic expressions true.

(0! + 0! + 0! )! =6
(1! + 1! + 1! )! =6
2 + 2 + 2 = 6
3 * 3 - 3 = 6
4 + 4 -sqrt(4) = 6
5 + 5 / 5 = 6
6 + 6 - 6 = 6
7 - 7 / 7 =6
8 - sqrt(sqrt(8+8) = 6
(9 + 9) / sqrt(9) = 6

#57 - Famous Counting Legs Riddle

I am standing in California palace. The palace has five soldiers. Every soldier has five rooms. Each room has five big tigers and each tiger have five small tigers. Each tiger has four legs.

How many are there in total?

3012

25(number of rooms) * 5(big tiger) * 5(1-big tiger + 5small tiger) * 4(no. of legs)
+
5(no. of soldiers) * 2(no. of legs)
+
2 (Your leg)

25*5*6*4 + 5*2 + 2
3012

#58 - Robbers Coin Puzzle

Seven Robbers loot the bank and hide the coins at a deserted factory.
They decide to divide the money equally next morning. Two greedy robbers decided to cheat the others and reach the factory at night. They equally divided the coins between them, one coin left. So they called another robber and then they decided to divide equally among three. Sadly again one coin left. Same thing happened for 4th 5th and the 6th robber.
However when 7th robber reached in the morning, they are able to divide the coins equally.

How many coins were there in total?

301 Coins

The remainder of 301/2 , 301/3 , 301/4 , 301/5 & 301/6 is one but 301 is perfectly divided by 7.

#59 - Find The Thief Riddle

Can you find the thief by just looking at the picture below?

Find The Thief Riddle

The Lady sitting in the chair has the detector attached to the back of her blouse.

#60 - Missing Rs1 Puzzle

I have Rs.50 and i spend in the way below.

Missing Rs1 Puzzle

Adding commutative balance does not make any sense.
Check my next example, where is spend Rs 50 in way below

Spent Balance
10 40
10 30
10 20
10 10
10 0
==============
50 100

So in the puzzle, the number was chosen to confuse readers.