Exercise 5.3 question no. 3 (IX) solve it

1.	Exercise 5.3 question no. 3 (IX) solve it
Answer» As we know that, S= n/2(2a+(n-1)d). Then, 192 = 8/2 ( 2×3 + ( 8-1 ) d) , 192 = 24 + 56/2× d, 168 = 56/2 × d, 168× 2 = 56 d, 336/56 = d , 6 = d, So, the value of d is 6.

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