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

You are playing as white and given four rooks to checkmate the black king in four moves with the following rules 1. You can place one rook every move and ensure the black king should be in check position.2. After four moves the black king should be in the checkmate position.

If you had an infinite supply of water and 5-quart and 3-quart pails, how would you measure exactly 4 quarts? What is the least number of steps you need?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

What do you see in the image below

What type of tree can I carry in my hand?

What makes this number unique: 8,549,176,320?

Which number should replace the question mark?

Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

I left my campsite and hiked south for 3 miles. Then I turned east and hiked for 3 miles. I then turned north and hiked for 3 miles, at which time I came upon a bear inside my tent eating my food! What colour was the bear?