I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

Can you solve this tricky maths equation problem by replacing it? mark with the correct symbol?

19834 -----: 187
15921 -----: 153
17561 -----: 139
13734 -----: ???

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

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

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

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Can you name an animal whose killing cannot be performed without spilling your own blood?

Where do fish keep their money?

There were two grandmothers and their two granddaughters.
There were two husbands and their two wives.
There were two fathers and their two daughters.
There were two mothers and their two sons.
There were two maidens and their two mothers.
There were two sisters and their two brothers.
Yet there are only six, who are buried here,
All are born legitimate and relationships clear.
How can this happen?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??