Multiple choice

In the following number series only one number is wrong. Find out the wrong number. $2 10 18 54 162 486 1458$

  1. $18$
  2. $54$
  3. $162$
  4. $10$
  5. None of these

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The pattern from 18 onwards is ×3: 18×3=54, 54×3=162, 162×3=486, 486×3=1458. But looking at 2→10→18, this doesn't fit the ×3 pattern. The correct pattern seems to be: 2×5=10, 10+8=18, then 18×3=54. However, if the pattern should be consistently ×3 from the beginning, then 10 is wrong because 2×3=6, not 10. If the pattern is ×3 throughout after the first term, 10 breaks this pattern.