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!

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

If eleven plus two equals one, what does nine plus five equal?

Can you make a six-letter word using the letters N, A and B ?

John is 45 years older than his son Jacob. If you find similarities between their ages, both of their ages contain prime numbers as the digits. Also, John's age is the reverse of Jacob's age.

Can you find their ages?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

Why do you find that most of the buildings are deprived of the 13th floor?