Question

write the formula to find the sum of n term of an AP when the first term a an d last term an are given​

Answer 1

Answer:

❤ Hello ❤

Step-by-step explanation:

SUM OF TERMS ⤵

$= > \frac{n}{2} (a + an)$

hope it's help u

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Answer 2

Step-by-step explanation:

HELLO MATE

IN AN AP OF N TERMS

Sn= n/2(2a+(n-1)d)

HOPE IT HELPS