4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

The sum of a mother, her baby and her dog's weight is 170 Kg. How much does the baby weigh if the mother weighs 100 kg more than the combined weight of the baby and the dog, and the dog weighs 60 per cent less than the baby?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

Why is it very easy to weigh a fish?

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

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

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?