There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

Eight Chelsea player makes the following statements :

1. Seven of us are lying here.
2. Six of us are lying here.
3. Five of us are lying here.
4. Five of us are lying here.
5. Four of us are lying here.
6. Three of us are lying here.
7. My name is Torres.
8. My name is Lampard.

The last two are Lampard and Torres or maybe Torres and Lampard.
So can you deduce which of the last two is Lampard or Torres?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

What is next number in the pattern below:

131 517 192 123 ?

Identify the next two numbers in this series.

101, 112, 131, 415, 161, 718, ???, ???

Solve the counting riddle by identifying the number of triangles in the given picture.

Two boys were admitted to a school. When the headmaster asks them about their parents, they tell him that they have same parents (father and mother). On further inquiry, it turns out that they both share the same date for their birthday.

"Are you twins," ask the headmaster.
"No," replies the boys.

Is it possible?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

If you were to put a coin into an empty bottle and then insert a cork into the neck, how could you remove the coin without taking out the cork or breaking the bottle?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?