There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

Complete the table series riddle by finding the number that can replace "??".

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

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?

What seven-letter word has hundreds of letters in it?

Trying to tease Birbal, Akbar gave him one gold coin and ask him to buy
* something for him to eat
* something for him to drink.
* something to feed the cows
* something to plant in the garden
and most important you need to buy only one thing.

What must Birbal buy to silence Akbar?

What jumps when it walks and sits when it stands?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

John is looking at Jenifer, but Jenifer is looking at Jacob. John is married, but Jacob is not.

Is a married person looking at an unmarried person ?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?