Can you solve below mathematical equation?

2^1234 - 2^1233

A kind heart person buy packed food at 3$/packet from United states and sells them at 1$/packet at Africa. After some time he becomes a millionaire.

How come the guy become millionaire ?

Find the missing letter in the last circle logically in the given below picture.

Look at the picture and find out which square is not linked with any of the other squares.

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

A family is trapped in a jungle. There is a bridge which can lead them to safety. But at one time, the bridge can only allow two people to pass through. Also, all of them are afraid of the dark and thus, they can't go alone.

Father takes 1 minute to cross, the mother takes 2 minutes, the son takes 4 and the daughter takes 5 minutes. While crossing the time taken will be according to the slower one. How can they all reach the other side in the minimum possible time?

He runs but never walks. Murmurs, but never talks. Has a bed, but never sleeps. And has a mouth, but never eats?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Move three sticks of the spiral below to form a square.

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?