{:(3,1,4),(5,4,7),(2,8,?),(38,81,74):}...

`{:(3,1,4),(5,4,7),(2,8,?),(38,81,74):}`

A

9

B

6

C

3

D

7

लिखित उत्तर

Verified by Experts

The correct Answer is:

C

`3^(2) + 5^(2) + 2^(2) = 38`
और `1^(2) + 4^(2) + 8^(2) = 81`
`:. 4^(2) + 7^(2) + (?)^(2) = 74`
या,`74 - 49 - 16 (?)^(2)`
या, `(?)^(2) = 9`
या, `? = 3`

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