Login

Login
Register

Questions
Unanswered
Tags
Categories
Ask a Question

In an AP if a = 1, an = 20 and Sn = 399, then n is (A) 19 (B) 21 (C) 38 (D) 42

+1 vote

asked Mar 14, 2019 in Class 10 by kratos

In an AP if a = 1, an = 20 and Sn = 399, then n is

(A) 19 (B) 21 (C) 38 (D) 42

ncert
class-10
arithmetic progression
airthmetic progressions

Please log in or register to add a comment.

Please log in or register to answer this question.

1 Answer

+4 votes

answered Jun 24, 2020 by kratos

Best answer

Correct answer is (C) 38

Please log in or register to add a comment.

Related questions

How can the blind boy make it day or ....... a.light b. warm c. night d. pleasant
Read the lines from a poem by D.V.G Does the poem “The Blind Boy ” reflect the same idea?
To hear the rattling ........... (a) Cabin (b) mast (c) trumpet (d) deck
Write the decimal number represented by the points A,B,C,D on the given number line.
Out of the following which compound has zero dipole moment? (a) CH3Cl (b) CHCl3 (c) CCl4 (d) CHI3

Snow Theme by Q2A Market

Powered by Question2Answer

Copyright © QinStar.in

...