Find the number of squares in the below picture

Two friends were betting. One said to the other, "The coin will be flipped twenty times and each time the coin lands on the head, I will give you $2 and each time it lands on the tale, you will give me $3." After flipping the coin twenty times not a single penny was exchanged among them.

How many times did the coin land on heads?

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?

What is the next number in this series?

4,12,84,3612....

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

Okay before we begin with the puzzle, do keep in mind that you have to answer it quickly.

You are participating in a car race. Seeking the perfect moment, you overtake the second person in the race. What positions are you in now?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

What makes this number unique: 8,549,176,320?

What has a ring but no finger?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?