I’m tall when I’m young, and I’m short when I’m old. What am I?

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?

What do you call a fish without an eye?

What has 88 keys?

Can you make four (4) nines (9) equal 100?

What does it mean?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

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

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

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