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.

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

John is a strange liar.

He lies on six days of the week, but on the seventh day, he always tells the truth.

He made the following statements on three successive days:

Day 1: "I lie on Monday and Tuesday."
Day 2: "Today, it"s Thursday, Saturday, or Sunday."
Day 3: "I lie on Wednesday and Friday."

On which day does John tell the truth?