Question

common difference when a=3,n=8&s=192is oppatios (1) 8 (2) 3. (3). 6 (4) 7​

Answer 1

Answer:

a=3, n=8 & sn=192.

d=?.

sn=n/2[2a+(n-1)d].

192=8/2[2(3)+(8-1)d].

192=4[6+(7)d].

192/4=6+7d.

48=6+7d.

48-6=7d.

42=7d.

d=42/7.

d=6.

option (3) 6.

Answer 2

Answer:

(3) 6

Step-by-step explanation:

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

192=8/2[2x3(8-1)d]

192=4[6+7d]

192/4=6+7d

48=6+7d

48-6=7d

42 = 7d

6=d

d=6

hope its help you