Question

the sum of 8 term of an ap is 192 the first term is 3 find the common difference​

Answer 1

Answer:

Step-by-step explanation:

Sum of 8 terms is 192

a is 3

n is 8

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

S8 = 8/2(2(3)+(8-1)d)

192=4(6+7d)

192=24+28d

192-24 = 28d

168=28d

d=168/28

d=6

So, common difference is 6

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Answer 2

Answer:

D

Step-by-step explanation:

By solvi

1. Sum of first n terms is given by Formula-n/2(2a+(n-1)d)
2. 192=

4(6+7d)

By solving it we get d=6