O_er_t_o_

Complete the missing letters of the given word.

The more of this there is, the less you see. What is it?

Can you solve this picture maths equation?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

John was piloting a plane behind a car but was never able to overtake it. Why?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?