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  • Question
  • 5 x 15 ÷ 7 - 20 + 4 = 77


  • Options
  • A. - and +
  • B. x and ÷
  • C. + and ÷
  • D. + and x

  • Correct Answer
  • + and ÷ 

    Explanation

    If we interchanges signs '+' and '÷', then the equation changes into
    5 x 15 + 7 - 20 ÷ 4 = 5 x 15 + 7 - 5 = 77


  • Mathematical Operations problems


    Search Results


    • 1. 
      4 x 2 + 6 ÷ 2 - 12 = 2

    • Options
    • A. ÷ and x
    • B. + and -
    • C. x and +
    • D. ÷ and -
    • Discuss
    • 2. 
      3 - 9 x 27 + 9 ÷ 3 = 3

    • Options
    • A. + and -
    • B. x and +
    • C. x and ÷
    • D. - and ÷
    • Discuss
    • 3. 
      if 'R' means '÷', 'Q' means 'x', 'P' means '+', then 1 8 R 9 P 2 Q 8 =?

    • Options
    • A. 18
    • B. 16
    • C. 28
    • D. 30
    • Discuss
    • 4. 
      If '+' means '÷', '-' means '+', 'x' means '-' and '÷' means 'x', then what is the value of 24 ÷ 12 - 18 + 9?

    • Options
    • A. -25
    • B. 0.72
    • C. 15.30
    • D. 290
    • Discuss
    • 5. 
      If '-' stands for '÷', '+' stands for '-', '÷' stands for 'x', 'x' stands for '+', then which one of the following equation is correct?

    • Options
    • A. 70 - 2 + 4 ÷ 5 x 6 = 44
    • B. 70 - 2 + 4 ÷ 5 x 6 = 21
    • C. 70 - 2 + 4 ÷ 5 x 6 = 341
    • D. 70 - 2 + 4 ÷ 5 x 6 = 96
    • Discuss
    • 6. 
      16 - 21 ÷ 7 x 6 + 3 = 31

    • Options
    • A. - and +
    • B. + and x
    • C. ÷ and +
    • D. ÷ and x
    • Discuss
    • 7. 
      15 ÷ 9 x 3 - 74 + 2 = 5

    • Options
    • A. + and -
    • B. ÷ and x
    • C. + and ÷
    • D. - and ÷
    • Discuss
    • 8. 
      51 ÷ 3 x 12 - 6 + 3 = 201

    • Options
    • A. + and ÷
    • B. - and +
    • C. x and ÷
    • D. - and x
    • Discuss
    • 9. 
      16 + 4 ÷ 2 - 21 x 7 = 21

    • Options
    • A. + and -
    • B. + and x
    • C. - and ÷
    • D. x and ÷
    • Discuss
    • 10. 
      3 2 x 2 2 ÷ (6 2 - 9) + 1 2 = 33

    • Options
    • A. - and ÷
    • B. + and x
    • C. x and ÷
    • D. + and -
    • Discuss


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