what does this picture(rebus) riddle means ?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

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?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

Take number 1000 and then add 20 to it.
Now add 1000 one more time.
Now add 30.
Now add 1000 one more time.
Now add 40.
Now add 1000 one more time.
Now add 10.

What is the total?

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

What has 13 hearts but no other organs?

What month of the year has 28 days?