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`        Between 1 and 31 are inserted in AM's so  that the ratio of the 7th and( n -1)the means is 5:9. then the value of the n`
one year ago

Arun
22997 Points
```							Dear student 31 = 1 + (n+1) d (n+ 1) d = 30 Now Also 1 + 7d /1 + (n-1) d = 5/9 Now there rae two equation and two variables.now you can solve it.
```
one year ago
Arun
22997 Points
```							Dear students 31 = 1 + (n+1) d30 = (n+1) d also 1 + 7 d / 1+ (n- 1) d = 5/9 now there are 2 equations and 2 variables.
```
one year ago
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### Course Features

• 731 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions