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

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

Here is a conversation between a couple who both are software professionals.

Husband: Hey! What is your date of birth?
Wife Replied Angrily: It is 591062400
Husband after doing some calculations replied, "Got It".

What is the DOB of the wife?

The Puzzle: Here is a famous prize problem that Sam Loyd issued in 1882, offering $1000 as a prize for the best answer showing how to arrange the seven figures and the eight 'dots' .4.5.6.7.8.9.0. which would add up to 82

Two brothers were watching a horror film on video late one night. One brother dozed off and dreamed that he was being chased by the crazy man from the movie, who was trying to kill him. In the dream, he hid in a cupboard. There was no sound except his heart pounding, and he had no idea where his crazed captor was. He was terrified! At that moment, the video finished, and his brother put his hand on the shoulder of his sleeping sibling to wake him. The shock at that tense moment was enough that the sleeping brother suffered a massive heart attack and died instantly. True or false?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

Can you find the company name in the pictogram below?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.