While house hunting in London, I came across a very good leasehold property Discussing the lease the landlady told me:

'The property was originally on a 99 years lease and two-thirds of the time passed is equal to four-fifths of the time to come. Now work it out for yourself and see how many years are to go!

While preparing the table for dinner, wife came up with an idea to tease his mathematician husband. She asked her husband to pick nine toothpicks and make ten without breaking any toothpick.

The husband was also smart and did it within seconds. How ?

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

I’m tall when I’m young, and I’m short when I’m old. What am I?

What jumps when it walks and sits when it stands?

The dirtier I get, the whiter I look. Who am I?

10+10 and 11+11 can give you the same answer.

Explain how?

It's pretty hard to give up.
If you remove a part of it, you will be left with a bit.
Even if you remove another part, the bit still remains.
Remove one more and it still remains.

What is it?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

Can you find the key in the picture below?