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यदि 27**4=77 तथा 31**9=239 हो तो, 21**...

यदि `27**4=77` तथा `31**9=239` हो तो, `21**6=?`

A

94

B

107

C

99

D

106

लिखित उत्तर

Verified by Experts

The correct Answer is:
C
`27**4=77`
`rArr27xx4-(27+4)=77`
`rArr108-31=77`
`31**9=239`
`rArr31xx9-(31+9)=239`
`rArr279-40=239`
अतः,
`21**6`
`rArr21xx6-(21+6)`
`rArr126-27=99`
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