What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

How many times can you subtract the number 5 from 25?

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

Find the next number in the series below

21 32 54 87 131 ?

What is the below Rebus indicate?

Distances from you to certain cities are written below.

BERLIN 200 miles

PARIS 300 miles

ROME 400 milesAMSTERDAM 300 miles

CARDIFF ??? miles

How far should it be to Cardiff ?

There was once a college that offered a class on probability applied to the real world. The class was relatively easy, but there was a catch. There were no homework assignments or tests, but there was a final exam that would have only one question on it. When everyone received the test paper it was a blank sheet of paper with a solitary question on it: 'What is the risk?'.Most students were able to pass, but only one student received 100% for the class! Even stranger was that he only wrote down one word!
What did he write?

Complete the table series riddle by finding the number that can replace "??".

Can you count the number of triangles in the given figure?

How do you go from 98 to 720 using just one letter?