Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

I have branches, but no fruit, trunk or leaves. What am I?

What do you call a fish without an eye?

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

There are three light switches outside a room. One of the switches is connected to a light bulb inside the room.
Each of the three switches can be either 'ON' or 'OFF'.

You are allowed to set each switch the way you want it and then enter the room(note: you can enter the room only once)

Your task is to then determine which switch controls the bulb?

A pregnant woman is preparing to name her seventh child. Her children's names so far are Dominique, Regis, Michelle, Fawn, Sophie, and Lara. What will she name her next child -- Jessica, Katie, Abby or Tilly?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

Prove that the below maths equation is true.

8 + 8 = 91

What word does this rebus represent?

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