You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

Check out the number list below and find what number comes next in the sequence.

111 , 113 , 117 , 119 , 123 , 137 , ?

In a competitive exam, each correct answer could win you 10 points and each wrong answer could lose you 5 points. You sat in the exam and answered all the 20 questions, which were given in the exam.
When you checked the result, you scored 125 marks on the test.

Can you calculate how many answers given by you were wrong?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

Rearrange the letters in "new door" to make one word.

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?