Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
79 views
in Arithmetic Progression by (44.9k points)
closed by
Which term of the AP 21, 42, 63, 84,.. Is 210?
A. 9th
B. 10th
C. 11th
D. 12th

1 Answer

0 votes
by (43.8k points)
selected by
 
Best answer
Correct Answer - B
Let `T_(n) = 210."Then," 21 + (n-1) xx 21 = 210`
`therefore (n-1) xx 21 = 189 rArr n - 1 = 9 rArr n = 10`

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

...