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!

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

Jenifer is learning to drive her car. She went down a one way lane and in the wrong direction. But she do not break any law.

How come ?

You can see three almost identical images below. Can you spot the odd one out from them?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

There are three cows, two dogs, and one cat: How many legs do you have?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?

How do you go from 98 to 720 using just one letter?