What's the only room from which no one can enter or leave

What can you deduce from the following BrainBat?

CRY
LMKI

A dead body is found outside a multi-story multinational company. The case is reported and a homicide detective is called on the crime scene.

He looks at the body and then towards the building. From the position of the body, it is evident that the victim committed suicide. He goes to the first floor of the building and then walks in the direction of the dead body, opens the window and toss a coin in the air.

He goes to second floor and again repeats the process. He keeps doing this till he is done on all the floors. Then he returns back to the floor and tells his team that it is a murder.

How in heaven did he deduce that?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

What you cannot hold but it is yours?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

Why 1729 is a magic number? Answer Logically.

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

what one word does the below rebus identifies?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?