{:(5,3,7,1),(7,5,9,3),(4,4,4,4),(3,2,?,1...

`{:(5,3,7,1),(7,5,9,3),(4,4,4,4),(3,2,?,1):}`

A

6

B

5

C

4

D

2

Verified by Experts

The correct Answer is:

C

First Column
`5+7=4xx3`
Second Column
`3+5=4xx2`
`7+9=4xx?`
`rArr?=(16)/(4)=4`
Fourthh Column
`1+3=4xx1`

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