A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

Can you count the number of triangles in the picture below?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, "Why are you smiling?"

How did he know his companion was smiling?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

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

On her drawing table, Sayna lit 12 coloured candles. A few seconds later she blew two candles off.

How many candles Sayna have at the end?

If I put in one canary per cage, I have one bird too many. If I put in two canaries per cage, I have one cage too many. How many cages and canaries do I have?

Find the next number in the sequence

5 12 24 36 ?

By what process could you make a 'Tea-Table' into food?