Multiple choice

In the following number-series one number is wrong. Find out that wrong number. $2 \quad 11 \quad 38 \quad 197 \quad 1172 \quad 8227$

  1. 38

  2. 11

  3. 1172

  4. 8227
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The pattern is: multiply by 3 and add alternating values. 2×3+5=11, 11×3+5=38, 38×5+5=195 (not 197), 197×6-5=1177 (not 1172). If we replace 197 with 195: 2×3+5=11, 11×3+5=38, 38×5+5=195, 195×6-5=1165 (still not 1172). Another pattern: ×2+5, ×3+5, ×5+5, ×6-5, ×7-5. With 38 replaced: 2×2+5=9 (not 11). The correct wrong number is 1172.

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