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

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

Your last good ping-pong ball fell into a narrow metal pipe embedded one foot deep in concrete.
How can you get it out undamaged, if all the tools you have are your tennis paddle, shoe laces, and plastic water bottle, which does not fit into the pipe?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?

Count the number of triangles in the picture below:

how come the second man dies?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

I am eight letters long - "12345678"
My 1234 is an atmospheric condition.
My 34567 supports a plant.
My 4567 is too appropriate.
My 45 is a friendly thank-you.
My 678 is a man's name.

What word am I?