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

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?

Why is the Hole below a Lock?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

Given below is simple addition with a defined pattern pattern:
7 + 7 = 2
8 + 8 = 4
8 + 5 = 1
6 + 9 = 3
10 + 11 = 9

Can you analyze the pattern and find out the answer for:

4 + 9 = ?

Remove two matchsticks to make the below equation correct.

A newspaper is supposed to have 60 pages.Pages 14 and 21 are missing from the newspaper.

Can you tell me , Which other pages won't be there as well ?

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

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

What is more useful when it is broken?