Find the next number in the series.
1 10 24 43 67 ?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

Identify the hidden meaning behind this picture?

An artist while painting a scenic beauty, decides to paint three layers of blue colour on the sky.

Which layer will go on the first?

What happened when the wheel was invented?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

The centre of the third figure is empty. What digit should fit inside?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

When it's bad luck to meet a black cat?

Three ants are going up a hill, one behind the other. The last ant then says to the other ants, 'There is an ant behind me!'' How come?