43K views · 425 reactions | Sum of Terms in Arithmetic Progression...

Arithmetic Progression (AP) is a sequence where the difference between any two consecutive terms is always the same. This fixed gap is called the Common Difference (d). Example: 5, 9, 13, 17… Here each term increases by 4, so d = 4. Geometric Progression (GP) is a sequence where each term is obtained by multiplying the previous term by the same number. This fixed multiplier is called the Common Ratio (r). Example: 3, 6, 12, 24… Here each term is multiplied by 2, so r = 2. AP grows by addition (l