Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

What can you hold in your right hand, but never in your left hand?

Five thieves looted a bank and they ran away in a car. The bank staff informed the police and they began the search of their car in their jeep. They found them on a road and chased them eventually catching them. The light that is used to fill the number plate was broken on the thieves' car. Also, the headlights of the jeep police were not working. How were the police able to catch the thieves then?

I look at you, you look at me I raise my right, you raise your left. What am I?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

Can you decipher the below rebus?

PBLUESAISNUERSES

What part of the chicken has the most feathers?

Count the number of squares in the picture below.

Count the squares in the matchstick puzzle below?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?