Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • NCERT
  • In an AP: (ix) given a = 3, n = 8, S = 192, find d .

Q : 3       In an AP:

              (ix) given  \small a=3,n=8,S=192,  find \small d .

Answers (1)

best_answer

It is given that
\small a=3,n=8,S=192,
Now, we know that 
S_n = \frac{n}{2}\left \{ 2a+(n-1)d \right \}
\Rightarrow 192 = \frac{8}{2}\left \{ 2\times(3) +(8-1)d\right \}
\Rightarrow 192=4\left \{6 +7d\right \}
\Rightarrow 7d = 48-6
\Rightarrow d = \frac{42}{7} = 6
Therefore, value of d is 6

Posted by

Gautam harsolia

View full answer

Similar Questions

Trending Articles/News

anam-khan

CBSE Class 10 board exams twice a year ‘relief’ or ‘burden’? Parents, schools share mixed views
anam-khan

CBSE Class 10 exams twice a year from 2026; 64.4% students in favor, second attempt optional

Latest Question