John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller.

I called their home number and one of them picked up.
I asked. 'Does John lie?' The person replied with a yes.

Whom did I talk with, John or Jacob?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

By using 'because' continuously three times, can you make an English statement ?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

With the help clues provided in the image, can you find the 5 digit key?

Here is what you have to do. You have to throw a ball as hard as you can but it must return back to you even if it does not bounce at anything. Also, you have nothing attached to the ball. There is no one on the other end to catch that ball and throw it back at you.

How will you do it?

What two things can you never eat for breakfast?

For an extra income, John decided to work at a Hotel for one hour daily. The manager offers him that they will pay him $11 after every 11 days.
However, John offered a different proposition to the manager. The offers stand as:
He will be paid just a penny on his first day.
Two pence will be paid on the second day,
Four pence will be paid on the third day.
And so on till the 11th day.

Should the Hotel manager accept his offer?

Make a sentence consisting of three words that have the whole alphabet.

You need to arrange three 7 and mathematical symbols to form number 1?