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Class 14
REASONING
3, 15, 4, 16, 5, 17, 6, ? , 7...

3, 15, 4, 16, 5, 17, 6, ? , 7

A

12

B

13

C

15

D

18

लिखित उत्तर

Verified by Experts

The correct Answer is:
D

यहाँ दो एकान्तर श्रंखलाएँ दी गयी है ।
`3overset(+1)(to)4overset(+1)(to)5overset(+1)(to)6overset(+1)(to)7`
`15overset(+1)(to)16overset(+1)(to)17overset(+1)(to)18`
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