Which Burger Is Different in below image?

what does the below rebus mean?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

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

I know a nine-letter word having only one vowel.
Do you ?

The teacher told the student that if he told a lie then he will be expelled from school and if he told the truth then he still is expelled from school.

What can a student say to prevent his being expelled from school?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

He digs out tiny caves and stores gold and silver in them. He also built bridges of silver and made crowns of gold. They are the smallest you could imagine. Sooner or later everybody needs his help, yet many people are afraid to let him help them. Who is he?

What goes through cities and fields, but never moves?

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?