If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

A large water tank has two inlet pipes (a large one and a small one) and one outlet pipe. It takes 3 hours to fill the tank with the large inlet pipe. On the other hand, it takes 6 hours to fill the tank with the small inlet pipe. The outlet pipe allows the full tank to be emptied in 9 hours.

What fraction of the tank (initially empty) will be filled in 0.64 hours if all three pipes are in operation? Give your answer to two decimal places (e.g., 0.25, 0.5, or 0.75).

A bank customer had $100 in his account. He then made 6 withdrawals. He kept a record of these withdrawals, and the balance remaining in the account, as follows:

Withdrawals Balance left
$50 $50
$25 $25
$10 $15
$8 $7
$5 $2
$2 $0
----- -----
$100 $99

Why are the Totals not tallying?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

Imagine a box with two cogwheels, one big with 24 teeth and one small with 8 teeth. The big one is firmly attached to the center of the box which means it does not turn or move while the small one rotates around the big one.

How many times do you think that the smaller wheel will turn compared to the box when it turns once around the big one?

How many triangles can you find in this given picture?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

Can you replace the question mark with the correct number?

what does this picture(rebus) riddle means ?

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?