2, 3, 5, 9, 17, _ What is the next number in the sequence?

A man is found dead in his bathroom naked with blood scattered all around him. The bathroom was locked from the inside and there is no trace of any struggle. There is nothing in the bathroom except his pant with the belt still around and his shirt. Also, the medic team can't find any incision in his body that may have been the reason behind so much blood loss.

The Police department is clueless regarding this murder mystery.
Can you?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

French Police inspects a room where there are no windows, no doors, no tables and is almost empty expect there is just a puddle of water. They found a dead man who obviously hung herself from the ceiling, but they are not able to figure out how this had happened.

John and Jacob entered the crime scene and easily able to solve the case.

How did the man die?

Why Wine Glass Stem is so long?

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

Find the next number in the following series:
6, 14, 26, 98, __?

I’m tall when I’m young, and I’m short when I’m old. What am I?

How many triangles are there on the puzzle below?

I add 5 to 9 and get 2. The answer is correct, so what am I?