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Question

Find the next terms in the series :

7, 1, 11, 5, 15, 9, __, __

A
19, 13
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B
12, 18
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C
13, 19
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D
15, 12
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Solution

The correct option is A 19, 13
The correct option is (c).

If we observe the series then we can find :

For odd terms governing pattern is in the form: 4x + 3
For even terms governing pattern is in the form: 4x - 3

Hence the 7th term = 4(4) + 3 = 19
and the 8th term = 4(4) - 3 = 13

Answer = 19, 13

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