I have an eye but still cannot see.

Who am I?

I am the fastest animal but cannot climb the tree. What am I?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

What jumps when it walks and sits when it stands?

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.

If,

A = 1

B = 2

C = 3

...

...

Z = 26.

Based on above rule, you need to find an eleven letter word whose letter sum is equal to 52.

1 rabbit saw 9 elephants while going to the river. Every elephant saw 3 monkeys going toward the river. Each monkey had 1 parrot in each hand. How many animals are going towards the river?

How can you take 2 from 5 and leave 4?

How many sides does a circle have?