Look at the series of numbers given in the riddle and find the logic between them.
Once you have found how the numbers are connected find the missing numbers.

What comes in the sequence:
9, 11, 8, 12, ?
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If you look at the series you will infer that it follows an alternate addition and subtraction pattern while the number is incremented by 1 each time.
So to test this we check it in theĀ given series;
9 + 2 = 11;
11 – 3 = 8 &
8 + 4 = 12.
So to find the next numbers we continue the series as;
12 – 5 = 7 &
7 + 6 = 13.
Answer = 7, 13.
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