Basic concepts on a subject form the foundation. Tutorials are for building the foundational concepts in concise but comprehensive manner.
In work life and personal life often we need to learn the basics on a subject quickly. Usually it is not easy to acquire the basic concepts on any subject reliably in a short time from a concise material.
Basic concepts on any subject form the foundation, but generally we have found it is not easy to build it in a short time. Our focus here is on base concepts in a concise form that can be learned quickly and be used as a launch pad for further learning and subject specific problem solving.
Often we added a rich concept layer derived from the base concepts that helps to solve more complex problems with great ease. For us, it is a two layer concept model: Base concepts and Rich concepts derived from base concepts. Objective is efficient problem solving.
Basic maths: Basic concepts on maths. The content is primarily targeted for competitive test requirements.
Reasoning and logic analysis: Tutorials, problems and puzzles on competitive test reasoning and logic analysis.
Number system puzzle problem 8: Leftmost digit of a natural number at least 7 digits long is 3. When it is dropped, number becomes one-fifth...Read on.
Number system puzzle problem 7: Cube of a number exceeds its product with two other numbers by 2, the cube of the second number is less than...Read on.
Solve Number system puzzle problem 6 in 1 min: Product of a 2 digit number and number formed by reversing digits of the first is 2430. Find smaller number.
Number System Puzzle Problem 5: If 495 is subtracted from a 3 digit number with its digits reversed, you get the original number. Sum of digits...Read on.
Learn how to solve number system puzzle problem 4 in 1 min: The sum of thousands and tens digits in a 4 digit number is 4, the sum of hundreds...Read on.
Solve Number System Puzzle Problem 3 in 2 mins: Denominator of a fraction is less than the square of the numerator by 1. If 2 is added to both...Read on.
Solve number system puzzle problem 2 in 90 secs: What 2 digit number is less than sum of squares of its digits by 11 and exceeds their doubled product by 5?
Solve Number System Puzzle Problem 1 in 180 secs: How many of the four digit natural numbers divisible by 24 have also 24 appearing in them? Can you solve?
Secant of a circle relation: Square of a tangent segment from an external point equals product of two segments of a secant of a circle through the point.
Incenter of a triangle and Angle bisectors: Segmentation of the opposite side by an angle bisector and Segmentation of the angle bisectors at the Incenter.
