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If 27 * 4 = 77 and 31 * 9 = 239, then 2...

If 27 * 4 = 77 and 31 * 9 = 239, then 21 * 6 = ?

A

94

B

107

C

99

D

106

Text Solution

Verified by Experts

The correct Answer is:
C
`27**4=77`
`rArr 27xx4-(27+4)=77`
`rArr 108-31=77`
`31**239`
`rArr 31**9-(31+9)=239`
`rArr 279-40=289`
Therefore,
`21**6`
`rArr 21xx6-(21+6)`
`rArr 126-27=99`
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