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

Its something that each of us devours,
Not just us but birds, beats, trees, and flowers,
Frets iron and nibbles steel,
Toil hard stones to meal,
Exterminates king, collapse town,
And blows the mountains down.

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

One night, a man runs away from home. He turns left and keeps running. After some time he turns left again and keeps running. Later, he turns left one more time and runs back home—but when he gets home, he finds a man in a mask. Who was the man in the mask?

You can see it everyday, But cannot touch it at will. What is it?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

A blonde put eyeliner on her head. Why?

what does this picture(rebus) riddle means ?

Find the next number in the following series:
6, 14, 26, 98, __?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?