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

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

Why is Saturday stronger than Monday?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Can you identify the hidden rebus in the image below?

Open a Laptop which is password protected. Hint for the password is given as below:

1 mobile 3 books 2 Boards 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

One fine day, an intellectual man came to the emperor's court with the aim of testing Birbal's wittiness. In order to do this, he challenged Birbal to answer his question and hence prove that he was as intelligent and witty as he was said to be.
He asked Birbal, Do you want me to ask one difficult question or a hundred easy ones?
Since both Akbar and Birbal had had a tough day and were eager to leave, Birbal hastily told the intellectual to ask him a single difficult question.
Intellectual: OK. Tell me what came first into the world, the egg or the chicken?
Of course, the chicken, Birbal replied with a smile.
This time with a note of victory in his voice, the intellectual asked Birbal, How will you demonstrate that?
What did Birbal say?

A thief enters a store and threatens the clerk, forcing her to open the safe. The clerk says, “The code for the safe is different every day, and if you hurt me you’ll never get the code.” But the thief manages to guess the code on his own. How did he do it?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?