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लुप्त संख्या ज्ञात कीजिए । {:(8,9,9),(...

लुप्त संख्या ज्ञात कीजिए ।
`{:(8,9,9),(6,7,8),(9,11,?),(39,52,59):}`

A

10

B

11

C

12

D

13

लिखित उत्तर

Verified by Experts

The correct Answer is:
D
`8 xx 6 - 9 = 48 - 9 = 39`
`9 xx 7 - 11 = 63 - 11 = 52`
`9 xx 8 - ? = 59`
`rArr ? = 72 - 59 = 13`
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