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{:(5,8,9),(7,6,6),(9,7,?),(21,21,21):}...

`{:(5,8,9),(7,6,6),(9,7,?),(21,21,21):}`

A

7

B

6

C

5

D

4

Text Solution

Verified by Experts

The correct Answer is:
B
`5+7+9=21`
`8+6+7=21`
`9+6+?=21`
`:. ?=21-15=6`
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