What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

Two fathers and two sons decided to go to a shop and buy some sweets upon reaching. Each of them bought 1 kg of sweet. All of them returned home after some time and found out that they had 3kg of sweets with them.

They did not eat the sweets in the way, nor threw or lose anything. Then, how can this be possible?

If we tell you that there is a relation between the numbers and letters in the given figure, can you analyze it and find the missing letter in the last box?

I am an odd number. Take away a letter and I become even. What number am I?

Move three sticks of the spiral below to form a square.

What is the word or phrase below?
R | E | A | D

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?

Can you count the number of squares in the figure below?