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[" If "(5+9+13+...n" terms ")/(7+9+11+.....

[" If "(5+9+13+...n" terms ")/(7+9+11+...(n+1)" tems ")=(17)/(16)," then "n" is equal to "],[[" (A) "7," (B) "12],[" (C) "8," (D) "15]]

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