There are 40 questions in the test booklet of the Mathematics Olympiad. If Stephen scores 80 marks when 5 marks is awarded for each correct answer and 3 marks is deducted for each incorrect answer then find the number of correct answers attempted by Stephen.

WHAT ARE THE FORMULAS FOR FINDING THE INITAL SPEED

What is the formula of \[{x^2} + {y^2} + {z^2}?\

What is a dodging number?

What is the value of $ 5 $ million dollars in Indian rupees given that one dollar is equal to $ 75 $ Indian rupees.

How many perfect cubes can you find from 1 to 100? How many from -100 to 100?