Which is the smallest number that you can write using all the vowels exactly once?

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?

I am white when I am dirty, and black when I am clean. 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?

Can you find the missing piece of the Porsche?

The more you take me, the more you leave me behind.
Who Am I?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M