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in Mathematics by (76.1k points)

The sum of n terms of two A.P. series are in the ratio (n + 1) : (n + 3). Then the ratio of their 4th terms is 

(1) 3/4 

(2) 1/2 

(3) 4/5 

(4) 1/3

1 Answer

+1 vote
by (79.9k points)
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Best answer

Correct option (3) 4/5

Explanation: 

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