A

9

B

6

C

3

D

7

Text Solution

Verified by Experts

The correct Answer is:
C
The lowermost number in each column is the sum of the squares of the upper three numbers.
1st Column
`(3)^(2)+(5)^(2)+(2)^(2)=9+25+4=38`
2nd Column
`(1)^(2)+(4)^(2)+(8)^(2)`
`=1+16+64=81`
3rd Column
`(4)^(2)+(7)^(2)+(?)=74`
`=16+49+(?)^(2)74`
`=(?)^(2)=74-65=9`
`:. ?=sqrt(9)=3`
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