Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

What is the centre of gravity?

Can you make four (4) nines (9) equal 100?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

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!

There is a movie name hidden in the picture that is attached with this question. Can you find out which movie is it?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

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?

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E