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 Steven Zheng posted 2 months ago


Answer

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

  1. Not true

  1. If a>b and c>d


    Add the two inequalities, we get


    a+c>b+d

  1. Not true

  1. not true

Steven Zheng Steven Zheng posted 2 months ago

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