Mathematical operation and symbol notation


  1. If L denotes x
    M denotes ÷
    P denotes +
    Q denotes -
    then 16 P 24 M 8 Q 6 M 2 L 3 = ?
    1. 10
    2. 9
    3. 12
    4. 11

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    10

    Correct Option: A

    10


  1. If > denotes +, < denotes - , + denotes ÷ , ^ denotes x , - denotes = , x denotes > and = denotes < , choose the correct statement of the following :
    1. 13 > 7 < 6 + 2 = ^ 4
    2. 9 > 5 > 4 - 18 + 9 > 16
    3. 9 < 3 < 2 > 1 x 8 ^ 2
    4. 28 + 4 ^ 2 = 6 ^ 4 + 2

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    9 + 5 + 4 = 18 ÷ 9 + 16 = 18 = 18

    Correct Option: B

    9 + 5 + 4 = 18 ÷ 9 + 16 = 18 = 18



  1. If, + stand for division; x stands for addition; stands for multiplication; ÷ stands for subtraction, which of the following is correct ?
    1. 46 x 6 ÷ 4 - 5 + 3 = 74
    2. 46 - 6 + 4 x 5 ÷ 3 = 71
    3. 46 ÷ 6 x 4 - 5 + 3 = 75.5
    4. 46 x 6 - 4 + 5 ÷ 3 = 70.1

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    After changing '+' = ÷ , '-' = x
    'x' = '+' '÷' = -
    the equation, 46 - 6 + 4 x 5 ÷ 3 = 71
    CHS = 46 x 6 ÷ 4 + 5 - 3
    = 276 ÷ 4 + 5 - 3
    = 69 + 5 - 3
    = 74 - 3 = 71 R.H.S.

    Correct Option: B

    After changing '+' = ÷ , '-' = x
    'x' = '+' '÷' = -
    the equation, 46 - 6 + 4 x 5 ÷ 3 = 71
    CHS = 46 x 6 ÷ 4 + 5 - 3
    = 276 ÷ 4 + 5 - 3
    = 69 + 5 - 3
    = 74 - 3 = 71 R.H.S.


  1. After interchanging + and -, 8 and 7, which one of the following becomes correct ?
    1. 7 x 8 + 6 - 9 = 25
    2. 8 - 7 + 3 x 5 = 35
    3. 6 + 8 x 2 - 7 = 0
    4. 8 x 2 + 7 - 6 = 9

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    After changing '+' and '-' , 8 and 7 the appropriate equation is,
    6 + 8 x 2 - 7 = 0
    L.H.S. = 6 - 7 x 2 + 8
    6 - 14 + 8
    14 - 14 = 0 = R.H.S.

    Correct Option: C

    After changing '+' and '-' , 8 and 7 the appropriate equation is,
    6 + 8 x 2 - 7 = 0
    L.H.S. = 6 - 7 x 2 + 8
    6 - 14 + 8
    14 - 14 = 0 = R.H.S.



  1. If + stands for division; x stands for addition; - stands for multiplication, ÷ stands for subtraction, Which of the following is correct ?
    1. 25 x 3 - 7 ÷ 8 + 12 = 18
    2. 25 + 3 x 7 - 8 ÷ 12 = 10.89
    3. 25 - 3 ÷ 7 x 8 + 12 = 132
    4. 25 ÷ 3 x 7 - 8 + 12 = 19.3

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    25 ÷ 3 x 7 - 8 + 12 = 19.3

    Correct Option: D

    25 ÷ 3 x 7 - 8 + 12 = 19.3