They switch horses.
If you win, your horse (with your brother riding it) will loose and you get the inheritance

The letter ‘G’

Gordon is 64 and Tony is 48.
Tony is 16 years younger than Gordon.
When Gordon was 48, Tony was 32 which is half of Gordon’s age now.

Water

He must take out at least 40 socks to be 100% sure he has a pair of black socks.
If he takes out 39 socks he could have all the blue (21) and red (17) socks and only one black sock.

To get two identical socks of any color he only have to take out 4 socks.

The water at point C runs faster than at point A and B.
Tricky part is the water at point D.
After leaving the pipe there is no pressure and the water slows down.
But at the same time the gravity will take hold ff the water and accelerate it.
It all depends on the speed at point C and the maximum speed the water can get before reaching the ground (or other surface).

22 times

The hands of a clock point in opposite directions (in the same straight line) 11 times in every 12 hours. (Because between 5 and 7 they point in opposite directions at 6 o’clock only). So, in a day, the hands point in the opposite directions 22 times.

Their => There
Is => Are
Sentance => Sentence
Four => Three => Four => Three => Four => Three => Four => Three => ………….

The South pole where the only direction is north

Cannibals