Which is the correct shadow of the bird?

Whats the next number in the below number sequence pattern.

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

What word begins and ends with an E, but has only one letter?

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.

I add 5 to 9 and get 2. The answer is correct, so what am I?

I have eight fingers and two thumbs but I do not live. What Am I?

What is the word or phrase?

John Went to the nearby store in a Mall to buy something for her home. Below is the conversation between the two:

John: How much for the one?
Shopkeeper: It is $2
John: How much for the Eleven?
Shopkeeper: It is $4
John: How much for the Hundred?
Shopkeeper: It is $6.

What is John buying?