Question

iam of 10 class can anyone simply tell me about all formulas for maths in arthemetic progressions? please help me​

Answer 1

List of all Formulas used in Arithmetic Progression:

$\sf{1. \: a _{n} = a + (n - 1)d }$

$\sf{2. \: s _{n} = \frac{n}{2} \times 2a + (n - 1)d }$

$\sf{3. \: s _{n} = \frac{n}{2} \times ( a + a _{n}) }$

Here,

• Sn is the sum of all terms in the given AP
• an is the Value of a particular term.

For example : a₅ is the fifth term of the AP

It is also known as the last term or 'l'

• n is the required number of terms.
• a is the first term of the Arithmetic Progression.
• d is the common difference in the Arithmetic Progression.