I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Different lights make me strange by changing me into different sizes. What am I?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

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

This is a simple one. You just have to count the number of Fs in the given sentence.

Finished Files are the result of years of scientific study combined with the experience of years.

How many did you count?

What brings you down but never up?

The host of a game show, offers the guest a choice of three doors. Behind one is a expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

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