What do you think with the below Picture ?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

Andrew sees a very rare bird named "Ruppell's vulture". Soon Andrew was dead. Can you explain the mystery, Mr. Sherlock?

You can win me and lose me but never buy me
You can not eat me and never want to part with me
I can make you cry or bring you joy
I am not a machine and definitely not a toy
You keep me but i am not forever just yours
You might find me in a case or on a shelf next to a vase
I am hard and i am tall if you bump me i am sure to fall
I am made of different materials and am at many events
If your lucky and fight hard I might be yours
What am I ?

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

There are forty elephants and they have forty-fore heads. How can this be possible?

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

You need to arrange three 7 and mathematical symbols to form number 1?

What is the next number in the series?

15 29 56 108 208 ?