Question

Given
a = 8
an = 62
Sn = 210
Find n and a​

Answer 1

꧁SOLUTION꧂

Here:- a = 8

an = 62

Sn = 210

a= 8

n = ?

FOR FIND N:-

Put the formula of Sn

==> Sn = n/2 [a+an]

==> 210 = n/2 [8+62]

==> n = 210/35

==> n = 6

________________

Value of N = 6

________________

And a is already given in this question a = 8.

HOPE IT'S HELPS YOU MATE...✔✔

Answer 2

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❤.N=6 and A=8