If n^th terms of two A.P.'s are 3n + 8 and 7n + 15, then the ratio of their 12^th terms will be
[MP PET 1986]

4/9

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7/16

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3/7

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8/15

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Solution

The correct option is A
4/9

Required ratio is $\frac{44}{99} = \frac{4}{9} .$

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Similar questions

3 n + 8 : 7 n + 15

A . P

(3 n + 8); (7 n + 15)

12 t h

The ratio between the sum of n terms of two A.Ps is 3n + 8 : 7 n + 15. Then the ratio between their $12^{t h}$ terms is

n

2

(3 n + 8) : (7 n + 15)

12^{t h}

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