Can you count the number of triangles in the given figure?

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

Can you place three balls such that the equation shown in the picture holds true?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

Which part of London exists in France as well ?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

What breaks yet never falls, and what falls yet never breaks?

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?