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

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?

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

When a clock is observed, the hour hand is at a minute mark and the minutes hand is six minutes ahead of it.

When the clock is observed again after some time, the hour hand is precisely on a different minute mark and the minute hand is seven minutes ahead of it.

Can you calculate how much time has elapsed between the two observations?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?

What are the 50th, 63rd and 100th numbers in the sequence below?
4, 5, 8, 8, 9, 9, 12, 13, 13, 13, 17, 18, ...

When I asked a girl's name she told me her name is the date '07/09/2001'.

I thought for a few seconds and then I got her name. Do you?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?