What is the difference between a jeweller and a jailer?

I am sure no one can have two things for dinner. what are they?

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

Which is the rope you never skip with?

What number when divided in half becomes zero?

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?

Can you name some countries which do not have the alphabet 'A' in them?

Count the number of balls in picture below:

Can you find a rabbit in the given picture?

A gardener planted the Lemon trees in a mathematical ordered way (i.e. he planted a tree in rows).
He created a total of 19 rows of trees.

Note: There should be more than 2 trees to count as a row.

What is the minimum number of trees required by the gardener to have 19 rows of trees?