LIVE Course for free

Rated by 1 million+ students
Get app now
0 votes
15 views
in Aptitude by (54.3k points)
closed by
Five numbers in geometric progression are such that their product is 32. FInd the third number.
1. 4
2. 1/2
3. 2
4. 8

1 Answer

0 votes
by (30.0k points)
selected by
 
Best answer
Correct Answer - Option 3 : 2

Given:

Product of 5 numbers in geometric progression = 32

Calculation:

Let the five numbers in geometric progression be ar2, ar, a, a/r, a/r2

⇒ ar2  × ar ×  a ×  a/r ×  a/r2 = 32

⇒ a5 = 32

⇒ a5 = 25 

Powers are same so equating the bases

a = 2 

a is the third number of geometric progression

∴ The third number is 2

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.

Categories

...