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If '-' stands for '+','+' stands for 'xx...

If '-' stands for '+','+' stands for `'xx','xx'` stands for '-' then which one of the following is not correct ?

A

`22+7-3xx9=148`

B

`33xx5-10+20=228`

C

`7+28-3xx52=127`

D

`44-9+6xx11=87`

Text Solution

Verified by Experts

The correct Answer is:
C

Option (1)
`22+7-3xx9=148`
`implies22xx7+3-9=148`
`implies154+3-9=148`
Option (2) `33xx5-10+20=228`
`implies33-5+10xx20=228`
`implies33-5+200=228`
`implies233-5=228`
Option (3)
`7+28-3xx52=127`
`implies7xx28+3-52=127`
`implies196+3-52=127`
`implies199-52ne127`
Option (4) `44-9+6xx11=87`
`implies44+9xx6-11=87`
`implies44+54-11=87`
`implies98-11=87`
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