### #1 - Fill The Tank Riddle

Which tank will fill first?

3rd and 4th.Let us break down the problem into 5 steps.1. The water in tank1 will get filled up to the connectivity of tank1 and the tank2 and then it will start flowing to tank2.2. The water in tank2 will get filled up to the connectivity of tank2 and the -tank3 and then it will start flowing to tank3.3. The water in tank3 will get filled up to the connectivity of tank2 and the tank3 and then it will start flowing to tank3.4. As the outlet of tank3 and inlet of tank4 are not at the same level, water will continue to fill tank3 till the inlet of tank4.5. Now both the tank3 and tank4 fill simultaneously until both fill together.

### #2 - Sachin Ramesh Tendulkar Eqaution Puzzle

If,

Sachin + Ramesh + Tendulkar = 6

Sachin x Ramesh = 2

Ramesh x Tendulkar = 6

Then,

Tendulkar x Sachin =?

3

Sachin + Ramesh + Tendulkar = 6
Sachin x Ramesh = 2
Ramesh x Tendulkar = 6

Given.
Sachin x Ramesh = 2
Ramesh x Tendulkar = 6

Rewriting Both equations in terms of Ramesh,
Sachin = 2/Ramesh
Tendulkar = 6/Ramesh

Replacing above values in equation "Sachin + Ramesh + Tendulkar = 6"
2/Ramesh + Ramesh + 6/Ramesh =6
(2 + Ramesh^2 + 6)/Ramesh = 6
8 + Ramesh^2 = 6Ramesh
Ramesh^2 - 6Ramesh + 8 = 0
(Ramesh - 4) (Ramesh - 2) = 0

Therefore;
Ramesh = 4 or 2

Let us take value of Ramesh as 2
Sachin = 2/2 = 1
Tendulkar = 6/2 = 3

Therefore;
Tendulkar x Sachin = 3 x 1 = 3

### #3 - Matchsticks Number Sequence Puzzle

What is the next number in the matchsticks number sequence below?

1 (shown in the diagram below)At every step number of joint goes down by 1.i.e8 have 6 joints9 have 5 joints5 have 4 joints3 have 3 joints7 have 2 joints1 has 1 joint... the answer.

### #4 - Very Hard Interview Puzzle

Shahrukh, father of nine sons got 81 goats labeled as 1,2,3,4..... 81. The beauty of the label is such that the buffalo with label-1 gives 1-liter of milk, buffalo with label-2 gives 2-liters of milk..... Buffalo with label 81 gives 81-liters of milk, Shahrukh wants to distribute his 81 goats among all his sons such that each of them gets the same number of goats and the same quantity of milk.

Can you help him?

Shahrukh son-1: 1 11 21 31 41 51 61 71 81
Shahrukh son-2: 2 12 22 32 42 52 62 72 73
Shahrukh son-3: 3 13 23 33 43 53 63 64 74
Shahrukh son-4: 4 14 24 34 44 54 55 65 75
Shahrukh son-5: 5 15 25 35 45 46 56 66 76
Shahrukh son-6: 6 16 26 36 37 47 57 67 77
Shahrukh son-7: 7 17 27 28 38 48 58 58 78
Shahrukh son-8: 8 18 19 29 39 49 59 69 79
Shahrukh son-9: 9 10 20 30 40 50 60 70 80

### #5 - Tricky Chess Rebus Puzzle

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

Nightmare. (K)night + mare (A mare is the female of a horse)

### #6 - Sheikh Hotel And The Gold Bars

Sheikh Mansoor decided to stay at a luxurious hotel in Dubai. The Sheikh has got 3 gold bars which weigh as 4kg, 2kg, and 1kg respectively. The charge of the hotel is 1kg gold per day and they do not take any advances. Sheikh needs to stay at the hotel for seven days. How can the Sheikh pay for hotel easily?

Day 1:
Give 1kg gold bar.

Day2:
Give 2kg gold bar and take back 1kg gold bar back

Day3:
Give 1kg gold bar

Day4:
Give 4kg gold bar and take back 1kg gold bar back

Day5:
Give 1kg gold bar

Day6:
Give 2kg gold bar and take back 1kg gold bar back

Day7:
Give 1kg gold bar.

### #7 - Christmas Riddle For Kids

Can you spot 5 differences in two Christmas tree below?

Five differences in two images are:(1) Toy plane direction is different.(2) On the clock, number 1 & 2 is missing.(3) The colors of lamp light is changed.(4) The ribbon on the gift is missing.(5) Duck is added in the gift section.

### #8 - 8 Moves CheckMate Puzzle

With following rules:(A) White can make up to 10 legitimate moves until all kings are checkmate.(B) White can take any black piece except the king. (C) The White king cannot be in check position at any time of the game.Can you checkmate all kings in less than 10 moves?

It took 8 moves as shown in the image below.

### #9 - Hard 12 Matchsticks Puzzle

You need to remove four matchsticks from the picture below and still need to maintain the following as in the original image.1. 1st row contains 12 matchsticks2. 2nd row contains 12 matchsticks3. 1st column contains 12 matchsticks4. 2nd column contains 12 matchsticks

The puzzle is solved in the picture below.

### #10 - Danger Cryptarithms Puzzle

Solve below cryptarithms puzzle by replacing letter by the appropriate number.

C R O S S
+ R O A D S
===========
D A N G E R

it can be solved as below
9 6 2 3 3
+ 6 2 5 1 3
===========
1 5 8 7 4 6