## Sum of n terms of a sequence

If nth term of a sequence is given by Tn=an3+bn2+cn+d where a, b, c, d are constants then sum of n terms. Sn = a*Σ(n3)+b*Σ(n2)+c*Σ(n)+Σ(d)… Read More »

If nth term of a sequence is given by Tn=an3+bn2+cn+d where a, b, c, d are constants then sum of n terms. Sn = a*Σ(n3)+b*Σ(n2)+c*Σ(n)+Σ(d)… Read More »

These are following important points about circle in geometry : Equation of circle having center at (0, 0) and radius r : x2+y2=r2 Equation of… Read More »

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Given three integers A, B and K. Initially, the first person was ahead of the second person by K kms. In every hour, the first… Read More »

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Counting is the process of determining the number of elements of a finite set of objects. If set contains small number of objects/elements then it… Read More »

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Distribution of Data: The distribution of a statistical data set (or a population) is a listing or function showing all the possible values (or intervals)… Read More »

Data can be described numerically by various statistics, or statistical measures. These statistical measures are often grouped in 3 categories: 1. Measures of central tendency… Read More »