Question

Hello !!

All Formula of ch 5 Arithmetic progression Maths

Class =10

Answer 1

$\huge\mathfark\red{Formula}$

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$an \: = \: a + (n - 1) \times d \\ sn \: = \: \frac{n}{2} (2a + (n - 1) \times d \: \\ s = \frac{n}{2} (a + l)$

Common difference = a2 - a1 , a3 - a2

arithmetic mean :- a+ b / 2

Answer 2

Refer to the attachment!^^