What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

Its something that each of us devours,
Not just us but birds, beats, trees, and flowers,
Frets iron and nibbles steel,
Toil hard stones to meal,
Exterminates king, collapse town,
And blows the mountains down.

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

Why is the Hole below a Lock?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

Why do people go to bed?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.