if n th term of an AP is 2n+1, the sum of its first 20 terms of this A.P Is

CA Foundation · Quantitative Aptitude · MTP · January 2026
if n th term of an AP is 2n+1, the sum of its first 20 terms of this A.P Is
(A) A. 400
(B) B. 420
(C) C. 440
(D) D. 480

Suggested Answer and Working Notes:

Correct Answer: Option (C)

C. 440

Topics: Part-A: Business Mathematics

Open in Interactive Practice Hub · Full Practice Hub · Chapter Weightage · More in this subject

Related Questions in this Topic