Until it is measured, not known. Yet how you miss it when it has gone. What is it?

A man hijacks an aeroplane transporting both passengers(8 of them) and valuable cargo. After taking the cargo, the man demands nine parachutes, puts one of them on, and jumps, leaving the other eight behind. Why did he want eight?

Solve the mathematical equation in the picture below.

Can you place six matchsticks in a manner that each of the matchsticks is in touch with the other five matchsticks?

In which direction should the missing arrow point?

Thomas has missed an excessive number of days of school, so he must meet with Principal Davis. Mr. Davis asks him "Why on Earth have you missed so many days?" Thomas replies "There just isn't enough time for school. I need 8 hours of sleep a day, which adds up to about 122 days a year. Weekends off is 104 days a year. Summer vacation is about 60 days. If I spend about an hour on each meal, that's 3 hours a day or 45 days a year. I need at least 2 hours of exercise and relaxation time each day to stay physically and mentally fit, adding another 30 days. Add all of that up and you get about 361 days. That only leaves 4 days for school." The principal knows Thomas is full of it, but can't figure out why. Where is Thomas going wrong?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

Solve the puzzle by telling what does below picture means.

What does below Rebus mean ?

esgg sgeg gegs gsge

What do you see in the given picture?