if the first term of an AP is 2 and common difference is 4 then find the sum of its - Maths - Arithmetic Progressions

Question

if the first term of an AP is 2 and common difference is 4 then
find the sum of its first 40 terms (
experts please give the answers with same numbers which is
provided in question don’t change the numbers and don’t
provide any link )​​

Varun Rawat · Accepted Answer

Let a be the first term and d be the common difference
Now, a = 2; d = 4Now, sum of first n terms of AP is given by,Sn = n22a + n-1dS40 = 4022×2+39×4=204 + 156=20 × 160=3200

if the first term of an AP is 2 and common difference is 4 then find the sum of its first 40 terms.( experts please give the answers with same numbers which is provided in question don’t change the numbers and don’t provide any link.)​​

if the first term of an AP is 2 and common difference is 4 then find the sum of its first 40 terms.( experts please give the answers with same numbers which is provided in question don’t change the numbers and don’t provide any link.)