Multiple Choice Question (MCQ)

If a>b and c>d , which of the following must be true?

  1. ×

    ac>bd

  2. ×

    a+b>c+d

  3. a+c>b+d

  4. ×

    a-b>c-d

  5. ×

    ad>bc

Collected in the board: Inequality

Steven Zheng posted 1 year ago

Answer

  1. If a, c is less than 1, A is not true

  2. Not true

  3. If a>b and c>d


    Add the two inequalities, we get


    a+c>b+d

  4. Not true

  5. not true

Steven Zheng posted 1 year ago

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