Count The number of F's in the paragraph below:

"FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS"

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

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

John went to buy some expensive, foreign chocolates. He only had Rs 100 with him. When he reached the shop, he got out and know that on those chocolates, there was a 15% import duty and 5% VAT.

How much worth chocolate should he buy so that he can accommodate it in Rs 100?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

John and his team plan to rob a safe. They got just one chance to break the code else the local police will be informed. Below are clues:
A) Exactly one number is perfectly placed: 9 8 1
B) Everything is incorrect: 9 2 4
C) Two numbers are part of the code of the safe but are wrongly placed: 0 9 3
D) One number is part of the code of the safe but is wrongly placed: 1 4 7
E) One number is part of the code of the safe but is wrongly placed: 7 8 3

My location can be determined by the below rebus.
So where am i ?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?