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8 12 9 13 10 14 11
Question 1:
8 12 9 13 10 14 11
A.
14 11
B.
15 12
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This is an alternating addition and subtraction series, in which the addition of 4 is alternated with the subtraction of 3.
C.
8 15
D.
15 19
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Practice Number Series Online Test 5 | Englishfreetest.com
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10 questions
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