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Mathematical Operators Test 162
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Mathematical Operators Test 162

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  • Question 1/10
    1 / -0.25
    In a certain code language, '-' represents 'x', '÷' represents '-', '+' represents '+' and 'x' represents '÷'. Find out the answer to the following question.
    2 - 12 + 10 x 5 ÷ 12 = ?
    Solutions
    2 - 12 + 10 x 5 ÷ 12
    After changing the signs,
    ⇒ 2 × 12 + 10 ÷ 5 – 12
    ⇒ 2 × 12 + 2 – 12
    ⇒ 24 + 2 – 12
    ⇒ 26 – 12
    ⇒ 14
    Hence, the correct option is D.
  • Question 2/10
    1 / -0.25
    In the following problem, '=' stands for '÷' , '+' stands for '-­' , 'x' stands for '=', '-­' stands for '+' and '÷' stands for 'x'. Find the correct equation.
    Solutions
    From option A,
    after changing the signs,
    8x4-1+5÷6 = 4
    32-1 + 5/6 which is not equal to 4
    Hence, false.

    From option B,
    after changing the signs,
    4=6x4-4/7
    32-4/7which is not equal to 4
    Hence, false.

    From option C,
    5x3=25-20/20 = 39
    15+25-1 = 39
    39=39
    Hence, true.

    From option D,
    96x2 = 6x105-1
    192 = 630-1
    192 which is not equal to 629
    Hence, false.
  • Question 3/10
    1 / -0.25
    If ‘×’ means ‘÷’, ‘÷’ means ‘−’, ‘+’ means ‘×’, and ‘−’ means ‘+’, then what is the value of

    256 × 4 ÷ 30 – 12 + 7 =?

    Solutions

    In this question, we show that ‘×’ means ‘÷’, ‘÷’ means ‘−’, ‘+’ means ‘×’, and ‘−’ means ‘+’, then

    256 ÷ 4 – 30 + 12 × 7 =?

    According to BODMAS rule (BODMAS is an acronym and it stands for Bracket, Of, Division, Multiplication, Addition and Subtraction.) –

    ? = 64 – 30 + 12 × 7

    ? = 64 – 30 + 84

    ? = 148 – 30

    ? = 118

    So the correct answer is option C.

  • Question 4/10
    1 / -0.25
    If ‘+’ stands for division. ‘×’ stands for addition, ‘−’ stands for multiplication, ‘÷’ stands for subtraction, then which of the following equations is correct ?
    Solutions

    Refer the table below:

    Symbol

       +

       ×

        −

       ÷

    Meaning

       ÷

      +

       ×

       −

    36 − 6 + 3 × 5 + 3 = 74

    After converting the signs:
    ⇒ 36 × 6 ÷ 3 + 5 ÷ 3
    ⇒ 72 + 5 ÷ 3 ≠ 74 

    36 × 6 + 7 + 2 − 6 = 20
    After converting the signs:

    ⇒ 36 + 6 ÷ 7 ÷ 2 × 6 ≠ 20 

    36 + 6 − 3 × 5 ÷ 3 = 20

    After converting the signs:
    ⇒ 36 ÷ 6 × 3 + 5 − 3
    ⇒ 18 + 5 − 3  = 20 (correct)

    36 ÷ 6 + 3 × 5 + 3 = 45
    After converting the signs:
    ⇒ 36 − 6 ÷ 3 + 5 ÷ 3

    ⇒ 34  + 5 ÷ 3 ≠ 45

    Hence, option C is the correct answer.

  • Question 5/10
    1 / -0.25
    If ‘+’ stands for division, ‘÷’ stands for multiplication, ‘×’ stands for subtraction and ‘–’ stands for addition, then

    21 + 7 ÷ 4 – 10 × 2 =?

    Solutions

    21 ÷ 7 × 4 + 10 – 2 (Applying BODMAS)

    =>3 × 4 + 10 – 2

    =>12 + 10 – 2

    =>22 – 2

    =>20

    Hence, option A is the correct answer.

  • Question 6/10
    1 / -0.25
    Some equations have been solved on the basis of a certain pattern. Find the correct answer for the unsolved equation on that basis:
    7*4*3 = 437
    8*6*4=648
    4*3*6=?
    Solutions
    Clearly, in I and II, first digit has been placed at ones position of the number at on RHS.
    Therefore,
    7 * 4* 3= 437 
    8 * 6* 4 = 648
    4 * 3 * 6 = 364
    Hence, B is correct.
  • Question 7/10
    1 / -0.25
    Identify the correct response from the given premises stated according to the following symbols.
    If
    ‘+’ stands for multiplication
    ‘÷’ stands for subtraction
    ‘×’ stands for addition
    ‘-’ stands for division
    Which one of the equations is correct?
    Solutions


    Checking Option C,
    18 × 3 + 5 = 59
    After changing the symbols,
    18 × 3 + 35 ÷ 7 = 59
    Applying BODMAS we get,
    18 × 3 + 5 = 59
    54 + 5 = 59
    59 = 59
    Therefore, 18 × 3 + 5 = 59 is the correct equation.

    Hence, option C is the correct answer.
  • Question 8/10
    1 / -0.25
    Identify the correct response from the given premises stated according to the following symbols.
    If ‘×’ stands for division
    ‘÷’ stands for addition
    ‘+’ stands for subtraction
    ‘-’ stands for multiplication
    Which one of the equations is correct?
    Solutions

    By checking Option A,
    9-14+5÷3
    After changing the symbols,
    9×14-5+3
    Applying BODMAS we get,
    =126-5+3
    =124
    Therefore, 9-14+5÷3=124 is the correct equation.

    By checking Option B,
    10+3-15×5÷7
    After changing the symbols,
    10-3×15÷5+7
    Applying BOMAS we get,
    =10-3×3+7
    =10-9+7
    =17-9
    =8
    Therefore, 10+3-15×5÷7=81 is not the correct equation.

    By checking Option C,
    24×4+1-2÷3
    After changing the symbols,
    24÷4-1×2+3
    Applying BODMAS we get,
    =6-2+3
    =4+3
    =7
    Therefore, 24×4+1-2÷3=19 is not the correct equation.

    By checking Option D,
    15÷3+26×13
    After changing the symbols,
    15+3-26÷13
    Applying BODMAS we get,
    =18-2
    =16
    Therefore, 15÷3+26×13=50 is not the correct equation.
    Hence, option A is the correct response.
  • Question 9/10
    1 / -0.25
    In a certain code language, '÷' represents '+', '-' represents '×', '+' represents '÷' and '×' represents '-'. Find out the answer to the following question.

    18 + 2 × 30 ÷ 6 - 4 = ?
    Solutions
    18 + 2 × 30 ÷ 6 - 4 = ?
    Symbol   ÷   -   +  × 
    codes   +   ×    ÷   -
    After changing the signs,
    → 18 ÷ 2 - 30 + 6 × 4 = ?
     → 9 – 30 + 24
    → 9 – 6
    → 3

    Hence, the correct option is B.
  • Question 10/10
    1 / -0.25
    If "S" denotes "multiplied by", "V" denotes "subtracted from", "M" denotes "added to" and "L" denotes "divided by", then

    96 L 8 S 4 V 16 M 9 = ?
    Solutions

    Here,

    Given expression is, 96 L 8 S 4 V 16 M 9
    After changing symbols it becomes, 96 ÷ 8 × 4 – 16 + 9
    Applying BODMAS,
    96 ÷ 8 × 4 – 16 + 9
    = 12 × 4 – 16 + 9
    = 48 – 16 + 9
    =57-16
    = 41
    Hence, option C is the correct response.

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