A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

What can you see in the middle of March and April that you can never see in any other month?

Take number 1000 and then add 20 to it.
Now add 1000 one more time.
Now add 30.
Now add 1000 one more time.
Now add 40.
Now add 1000 one more time.
Now add 10.

What is the total?

Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

People put me on the table and cut me but do not eat me. What am I?

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

A King wants to send the diamond ring to his girlfriend securely. He got multiple locks and their corresponding keys. His girlfriend does not have any keys to these locks and if he sends the key without a lock, the key can be copied in the way. How can King send the ring to his girlfriend securely?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

Which of the below owl is odd one out?

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111