Your answer is - 1/7
Answer:
C
Step-by-step explanation:
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Answer: 25, 31 and 37
(2n-1)= 19, 21, 23, 25, 27, 29, 31, 33, 35, 37
(3n+1)= 19, 22, 25, 28, 31, 34, 37,