Which is the rope you never skip with?

What does this rebus means ?

PROG WORKRESS

Can you Find and name the hidden bird in the picture below ?

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

You have to put a letter on the following to make it a meaningful word. The only challenge is that you can't use 'E'.

S E Q U E N C _

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

What is the next shape from answers A, B, C, and D figure?