People make me, save me, change me, raise me. What am I?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

What can you see in the middle of March and April that you can never see in any other month?

One day, all the courtiers from Akbar's court were gathered in the assembly hall when one of them told the Emperor that all his valuables had been stolen by a thief the previous night.
This shocked the Emperor to his core as the place where that courter stayed was the most secured in the kingdom. The Emperor thought that it is not at all possible for an outsider to enter into the courtier's house and steal the valuables. Only another courtier could commit this crime. He quickly called Birbal to identify the thief.
Birbal thought for a while and successfully solved the mystery by identifying the thief in just one statement.
What did Birbal say?

I am a number I am not an odd number I am higher than 90 I am not higher than 100 If you subtract me from 100, you get nothing. What number am I?

They are three errirs in this question. Can you find them?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Who is generally closer to the kids, mom or dad?

(it's a funny riddle)

What does below chemistry rebus means?