Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

Can you find out the remainder when 3^300 is divided by 5?

A man hijacks an aeroplane transporting both passengers(8 of them) and valuable cargo. After taking the cargo, the man demands nine parachutes, puts one of them on, and jumps, leaving the other eight behind. Why did he want eight?

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

Identify the 10 differences between the two given pictures.

Forwards I am heavy, backward I am not. What am I?

Find the 8 in the below-given Image.

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?

Solve below popular number sequence
314 159 265 358 979 323 846 ?