11. if 'R' means '÷', 'Q' means 'x', 'P' means '+', then 1 8 R 9 P 2 Q 8 = ?

1. 1. 18

   
   
   

   2. 16

   
   
   

   3. 28

   
   
   

   4. 30

   
   
   

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1. View Hint View Answer Discuss in Forum

   Using the correct symbols, we have
   1 8 R 9 P 2 Q 8
   = 18 ÷ 9 + 2 x 8
   

   Correct Option: A

   Using the correct symbols, we have
   1 8 R 9 P 2 Q 8
   = 18 ÷ 9 + 2 x 8
   = 2 + 2 x 8 = 2 + 16 = 18

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12. 3 - 9 x 27 + 9 ÷ 3 = 3

1. 1. + and -

   
   
   

   2. x and +

   
   
   

   3. x and ÷

   
   
   

   4. - and ÷

   
   
   

   5. x and -

   
   
   

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1. View Hint View Answer Discuss in Forum

   Lets try all options one by one.

   Correct Option: E

   If we interchange 'x' and '-' , the equation changes into
   3 x 9 - 27 + 9 ÷ 3 = 27 - 27 + 3 = 3

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13. 4 x 2 + 6 ÷ 2 - 12 = 2

1. 1. ÷ and x

   
   
   

   2. + and -

   
   
   

   3. x and +

   
   
   

   4. ÷ and -

   
   
   

   5. x and -

   
   
   

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1. View Hint View Answer Discuss in Forum

   Lets try all options one by one.

   Correct Option: A

   If we interchanges signs '÷' and 'x', then the equation changes into
   4 ÷ 2 + 6 x 2 - 12 = 2 + 12 - 12 - 2

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14. 15 ÷ 9 x 3 - 74 + 2 = 5

1. 1. + and -

   
   
   

   2. ÷ and x

   
   
   

   3. + and ÷

   
   
   

   4. - and ÷

   
   
   

   5. None of the these

   
   
   

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1. View Hint View Answer Discuss in Forum

   Lets try all options one by one.

   Correct Option: C

   If we interchanges signs '+' and '÷', then the equation changes into
   15 + 9 x 3 - 74 ÷ 2 = 15 + 27 - 37 = 5

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15. 51 ÷ 3 x 12 - 6 + 3 = 201

1. 1. + and ÷

   
   
   

   2. - and +

   
   
   

   3. x and ÷

   
   
   

   4. - and x

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   Lets try all options one by one.

   Correct Option: E

   None of the interchange is applicable in the equation to produce number 201

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