What runs around the whole yard without moving?

There were two grandmothers and their two granddaughters.
There were two husbands and their two wives.
There were two fathers and their two daughters.
There were two mothers and their two sons.
There were two maidens and their two mothers.
There were two sisters and their two brothers.
Yet there are only six, who are buried here,
All are born legitimate and relationships clear.
How can this happen?

Can you place three balls such that the equation shown in the picture holds true?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Which word does the below Plexor means ?

Which is faster, Heat or Cold ? Explain.

You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT

What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

Who has married many women but was never married?

On a charity event in Russia, Murray beat Djokovic by winning six games and losing three games.
Note: There is a total of 5 service breaks(one who serve lost the game).
Who served first, Djokovic or Murray?