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If '-' stands for 'addition' '-:' for 'm...

If '-' stands for 'addition' `'-:'` for 'multiplication', `'xx'` for 'subtraction', and ' +' for 'division', then which of the following is correct?

A

`25 xx 12 - 14 -: 4 + 6 = 16`

B

`25 - 12 + 14 -: 2 xx 4 = 15`

C

`25 - 15+ 5 -: 4 xx 16=21`

D

`25 + 11 -4 -: 10 xx6 =20`

Text Solution

Verified by Experts

The correct Answer is:
C
On changing sign,
`25+15-:5xx4-16=21`
`implies25+3xx4-16=21`
`implies25+12-16=21`
`implies37=16=21`
21=21
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ARIHANT PUBLICATION-MATHEMATICAL OPERATIONS AND SYMBOL NOTATIONS-Let us Practice (A. Base Level Exercise )
  1. If '+' means '-:','-' means '+', 'xx' means '-' and '-:' means 'xx', t...

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  2. If P denotes ÷, Q denotes xx , R denotes + and S denotes -, then what ...

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  3. If '-' stands for 'addition' '-:' for 'multiplication', 'xx' for 'sub...

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  4. If A for '+', M for 'xx', D for '-:', G for 'gt', L for 'lt', then whi...

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  5. If the mathematical signs interchange from - to +,+ to -:,xx to - and ...

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  6. If +, -, xx, -:, =, gt and lt are represented as delta**,gamma,eta,ome...

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  7. Select the correct combination mathematical signs to replace .** signs...

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  8. Find the correct group of signs to solve the equation. 24** 16** 8**3...

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  9. If 'R' means '-:', 'Q' means 'xx' ,'P' means '+', then 1 8 R 9 P 2 Q ...

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  10. If '+' means '-','-' means 'xx','-:' means '+' and 'xx' means '-:', th...

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  11. If Q means '+', J means 'xx', T means '-' and K means '-:', then 30 ...

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  12. If P denotes '-:', Q denotes 'xx', R denotes '+' and S denotes '-', th...

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  13. Select the correct combination of mathematical signs to replace ** sig...

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  14. If the given interchanges are made in signs and numbers. which one of ...

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  15. If the given interchanges are made in signs and numbers. which one of ...

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  16. If the given interchanges are made in signs and numbers. which one of ...

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  17. If the given interchanges are made in signs and numbers. which one of ...

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  18. Select the correct combination of mathematical signs to replace ** sig...

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  19. Correct the following equations by interchanging the two signs. 3-9x...

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  20. Correct the following equations by interchanging the two signs. 4xx2...

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