Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

How do you go from 98 to 720 using just one letter?

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

What is the centre of gravity?

There is a family that live in a round house. The two parents go out for a movie and leave a babysitter to watch their son. They come back and the kid was not there. Some one kidnapped him. The maid said she was cleaning in a corner. The cook said he was making pizza. The babysitter said she was getting a board game. Who kidnapped him.

Can you spot the hidden girl in the picture below?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

What can go through glass without breaking it?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

The Federal bank of London is abducted by the robbers. The head of the robbers asked the cashier to empty their money vault to them and when suddenly cashier got a call from her father. To avoid any suspicion, the robber asked the cashier to pick the call and reply her father in the shortest manner possible.

The cashier told her father "Is there an emergency father, Call me when you are free and I will help you in your furnishing" and then the cashier hung up the phone.

After 10 minutes, police arrived at the crime scene.

How did the police know about the robbery?