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ICSE Class 10 Answered

Find five geometric means between 1 and 27. 
Asked by jaing8optics | 27 Jan, 2019, 03:36: PM
answered-by-expert Expert Answer
if 5 geometric means are inserted between 1 and 27, then 7th term of geometric progression is 27.
 
t7 = a×r6 = 27
 
where a is the first term , a =1 ;  hence r = 271/6 = √3
 
hence 5 geometric means are √3, 3, 3√3, 9 and 9√3
Answered by Thiyagarajan K | 27 Jan, 2019, 03:49: PM

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