If you say my name, I will no longer exist. What am I?

Do You See It?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

What's a single-digit number with no value?

Can you find the dog hidden in a group of pandas?

Count the number of triangles in the below picture?

Can you identify the hidden rebus in the image below?

"That Restaurant always remains crowded. This is the reason why nobody goes there".

Can you find a flaw in this statement?

A person was killed at a house party. When the police arrive, there are six people present in the house who are the friends of the victim. The name of the friends is Rohit, Aman, Nick, Gagan, and Randy.

Near the dead body, they find a few numbers written with blood by the victim on the floor. The numbers are 8, 5, 4, and 11.

The police arrests one of the friends for the murder. Whom did they arrest and why?