Question 4: If the sum of the first 20 consecutive positive odd numbers is divided by 20², the result is

A student was supposed to multiply a positive real number p with another positive real number q. Instead, the student divided p by q. If the percentage error in...

The ratio of the number of girls to boys in class VIII is the same as the ratio of the number of boys to girls in class IX. The total number of students (boys a...

Seven identical cylindrical chalk-sticks are fitted tightly in a cylindrical container. The figure below shows the arrangement of the chalk-sticks inside the cy...