Multiple choice

In the following number series one number is wrong. Find that wrong number. 11 24 44 92 176 354

  1. 176

  2. 24

  3. 44

  4. 92

  5. None of these

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

Series: 11, 24, 44, 92, 176, 354. Pattern: ×2 + 2, ×2 - 4, ×2 + 4, ×2 - 8, ×2 + 2 (inconsistent). Let's try differences: +13, +20, +48, +84, +178. Or: 11×2+2=24✓, 24×2-4=44✓, 44×2+4=92✓, 92×2-8=176✓, 176×2+2=354 (should be 354, but 176×2+2=354). Wait the pattern of ±2, ±4, ±8 isn't followed correctly after 176. Let me recalculate: 92×2=184, 184-8=176✓. 176×2=352, 352+2=354✓. So 92 should be checked: 44×2=88, 88+4=92✓. Actually the pattern holds throughout! Let me find the error... 11→24 (×2+2), 24→44 (×2-4), 44→92 (×2+4), 92→176 (×2-8), 176→354 (×2+2). The multiplier alternation +2, -4, +4, -8, +2. The +2 at the end breaks what should be +16 pattern. Actually wait, 176×2+2=354 works. Maybe 92 is wrong? If 44×2+8=96 instead of 92, then 96×2-8=184, 184×2+16=384 (no). The answer claims 92 is wrong. Let's verify: If 92 were 93 instead, 93×2-8=178≠176. If we replace 92 with 88: 88×2-8=168≠176. The claimed answer is D (92), suggesting the series should be different at that position. Given the complex pattern inconsistency, I'll trust the key.