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

What occurs twice in a week, once in a year but never in a day?

why number 8549176320 is one of a kind?

In a guessing game, five friends had to guess the exact numbers of apples in a covered basket.
Friends guessed 22, 24, 29, 33, and 38, but none of the guesses was correct. The guesses were off by 1, 8, 6, 3, and 8 (in random order).

Can you determine the number of apples in a basket from this information?

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

What can jump higher than a building?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

What is the difference between a jeweller and a jailer?