Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Can you make a six-letter word using the letters N, A and B ?

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?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

Complete the table series riddle by finding the number that can replace "??".

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

A bomb exploded in a room full of married couples and no one died. How?

What is so fragile that saying its name breaks it?

There is something which you can be arrested for attempting but not for successfully completing.