  ## Complex number- ISI entrance B. Stat. (Hons.) 2003- problem 5

Complex number In complex number we have real and imaginary part mixed and $\sqrt{-1}$ is the basic unit and denoted by $i$. In the given question we have to find value of k for which the equation will be valid. Try the problem How many integers $k$ are there... ## Area of polygon – AMC 10B, 2019 Problem 8

Area of polygon Polygon means shape composed of multiple sides , for example square , triangle, trapezium pentagon etc. A regular polygon means all of its sides have same length. Square ,equilateral triangle is a regular polygon. Let us learn to find the area of... ## Quadratic Equation ISI entrance B. Stat. (Hons.) 2003 problem 4

Quadratic Equation The roots of the quadratic equation lie between some range and it depends upon the coefficients of the equation. or may be predicted using the relation between coefficients. Try the problem Suppose $a+b+c$ and $a-b+c$ are positive and... ## Recursion – AMC 10B, 2019 Problem 25

What is Recursion Recursion is basically an idea of connecting any term with the next or previous term of an series. The most famous example of recursion is Fibonacci series $0,1,1,2,3,5,8,……..$ its recursion formula is $t_{n+2}=t_{n+1}+t_n$ for...

## Coordinate Geometry – B.Stat. (Hons.) Admission Test 2005 – Objective Problem 5

What are we learning ? Competency in Focus: Coordinate Geometry This problem from B.Stat. (Hons.) based on coordinate geometry Admission Test 2005 – Objective Problem 5  is based nature of curve. First look at the knowledge graph:- Next understand the problem The...