Multiple choice

Find the wrong term in the following number series- 160 240 200 180 108 54

  1. 108

  2. 200

  3. 180

  4. 160

  5. 54
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The series alternates between multiplication and division: 160 × 1.5 = 240, 240 × 0.833... = 200 (should be 200), 200 × 0.9 = 180, 180 × 0.6 = 108, 108 × 0.5 = 54. The pattern is: ×1.5, ÷1.2, ×0.9, ÷0.6, ×0.5. Checking: 160 × 1.5 = 240 ✓, 240 ÷ 1.2 = 200 ✓, 200 × 0.9 = 180 ✓, 180 ÷ 0.6 = 300 (not 108). The term 200 is wrong - the series should maintain the alternating pattern.

Keep practicing — related questions