Multiple choice

Find the wrong number in the following number series. $30, 46, 78, 124, 190, 270$

  1. 46

  2. 78

  3. 124

  4. 190

  5. 270
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Differences: 46-30=16, 78-46=32, 124-78=46 (not 48), 190-124=66 (not 64), 270-190=80. Pattern should be differences of 16, 32, 48, 64, 80 increasing by 16 each time. 124 breaks this - should be 78+48=126. Continuing correctly: 126+64=190, 190+80=270.

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