What month of the year has 28 days?

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

What type of tree can I carry in my hand?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

Can you count the number of blocks in the picture below?

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

How many Watermelons are there in the below picture?

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.