Multiple choice

In the following number series only one number is wrong. Find out the wrong number. 1080, -540, 180, -45, 9, -3

  1. -540

  2. 180

  3. -45

  4. 9

  5. -3
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E Correct answer
Explanation

Pattern: ÷(-2), ÷(-3), ÷(-4), ÷(-5), ÷(-6)... Starting: 1080÷(-2)=-540, -540÷(-3)=180, 180÷(-4)=-45, -45÷(-5)=9, 9÷(-6)=-1.5. The term -3 breaks the pattern - it should be -1.5.

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