Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

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?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

In a fruit store, there was a unique weighing machine that was made to weigh only cherries and strawberries as they were priced the same.

Other fruits like watermelons or mango had different machines as they were expensive.

A man successfully buys watermelons at the price of cherries. How?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

Keyboard words are not in alphabetical order, Why?

The following "Brain Bat" means Slow Down.
S
L
O
W

Using the same logic, can you tell us what does the following Brain Bat means ?
E
V
I
G

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?