Multiple choice

Find the missing term in the following number series- $240 ? 400 460 560 610$

  1. 300

  2. 325

  3. 310

  4. 315

  5. 340
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Working backwards from 610: 610-50=560, 560-100=460, 460-60=400, 400-90=310. The pattern in differences is 50, 100, 60, 90. Odd positions decrease by 50 (310+160=471, 471+161=632...), even positions increase by 50 (240, 290, 340...). Missing term is 310.

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