Find the 12th term of a G.P. whose 8th term is 192 and the common ratio is 2.

0 votes
36 views
asked Feb 10, 2018 in Mathematics by Rohit Singh (61,782 points) 36 142 452
Find the 12th term of a G.P. whose 8th term is 192 and the common ratio is 2.

1 Answer

0 votes
answered Feb 10, 2018 by sameer (82,980 points) 5 14 65

Common ratio, r = 2
Let a be the first term of the G.P.
∴ a8 = ar 8–1 = ar7 ⇒ ar7 = 192 a(2)7 = 192 a(2)7 = (2)6 (3)

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.

One Thought Forever

“There is a close connection between getting up in the world and getting up in the morning.“
– Anon
~~~*****~~~

...