You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

what does the below math rebus puzzle mean?

A boy purchased a book from a bookkeeper and gave him $100.
The cost of the book is $50 but the bookkeeper has no change, so he gets the change from the next shop and returns the boy his $50.

After some time the next shopkeeper came with the $100 note and told the bookkeeper that the note was a fraud, so he took the money back.

How much loss did the bookkeeper face?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

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?

Which tank will fill first?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

Which Travels Faster? Solve below famous picture riddle:

There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units.

Can you calculate the dimensions of this box with the given data?