I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

In a secret society, a buried chamber can be accessed only via a secret password. The password is seven characters long and comprises of just letters and numbers.

You find a code that can help you in cracking the password. The code says "You force heaven to be empty".

Can you deduce the password from that?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

John was writing his first book. After saving the document, he locked his laptop with a password and mentioned some phrases for the hint box.

A friend of his tried opening his laptop but found out that it was password protected. Following is the hint that appeared.
1 mobile 3 books 2 roars 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches.

Can you help him in cracking the password?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

What do you think with the below Picture ?

There are three boxes. One is labeled "APPLES" another is labeled "ORANGES". The last one is labeled "APPLES AND ORANGES". You know that each is labeled incorrectly. You may ask me to pick one fruit from one box which you choose.

How can you label the boxes correctly?

Name a key which is hardest to turn.