Can you replace the question mark with the correct number in the below table sequence?

Identify the 10 differences between the two given pictures.

What is the Surname of Barbie Doll?

Find the missing letter in the last circle logically in the given below picture.

In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?

In the image given, you can find several triangles. Can you count them all?

What has many teeth, but cannot bite?

How can you throw a ball as hard as you can and have it come back to you even if it doesn't hit anything there is nothing attached to it and no one else catches or throws it.

On 26-01-2022, Juli was murdered at her house in a city in India in the afternoon. There were three suspects in the murder and the following are the statements that were given by them:

John: I visited my village that day.
Jacob: I was out to deposit my house tax in the municipality office at that time.
Jonny: I was at a friend's place having lunch at that time.

Can you find out who is the murderer?

Can you write down eight eights so that they add up to one thousand?