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

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

How do you go from 98 to 720 using just one letter?

There was a strange boy who was born before his father. How can this be possible?

Count the number of squares in the picture below.

Prove that twice of ten is the same as twice of eleven.

There was once a troop of 5 elves. The 5 elves were very dedicated on finding the magical treasure of 1000 coins. However, being elves, they were super geniuses, very greedy and they did not hesitate in taking lives of other elves. The 5 elves were named Aye, Bee, Cee, Dee and Ee, ranked from high to low respectively, from Aye to Ee. One fine day, their efforts brought results and they found 1000 coins. Now they had to split it in between them as per their ranks. The lowest ranked elf has to make the proposal. If the proposal is accepted by majority, it is agreed, or the suggesting elf is killed.

What proposal should elf Ee make ?

How old is your son? asked a man to his neighbour. My son is five times as old as my daughter and my wife is five times as old as my son. I am twice as old as my wife whereas my grandmother, who is celebrating her eighty-first birthday is as old as all of us put together.

How old is the man's son ?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?