What does below rebus means ?

When does a USA Potato change its nationality?

Can you decipher the two rows to find the hidden word?

One night, a woman receives a call from the police. They tell her that her husband was murdered and that she should come to the crime scene as soon as possible. The woman drops the phone, shocked, and drives 20 minutes to the crime scene. As soon as she reaches the crime scene, the police arrest her and she is convicted of murder. How do the police know she committed the crime?

what's the probability of getting a king or a queen from a pack of 52 cards?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

John Went to the nearby store in a Mall to buy something for her home. Below is the conversation between the two:

John: How much for the one?
Shopkeeper: It is $2
John: How much for the Eleven?
Shopkeeper: It is $4
John: How much for the Hundred?
Shopkeeper: It is $6.

What is John buying?