Question

if A.P.is 2,5,8.....92 then find the first term , common difference and sum of terms

Answer 1

first term = 2
Common Difference = (5-2) = 3
2+(n-1)(3)=92
3n-3 = 90
n = 31
sum of term = n/2(2a + (n-1)(d))
31/2(2*2 + (31-1)(3))
=1457

Answer 2

Answer is in above pic,
a=2,
d=3
sum of all terms=1457
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