Which number set is different? : (11, 22, 44), (13, 26, 52), (15, 30, 60), (14, 28, 43)

Question

Which number set is different? : (11, 22, 44), (13, 26, 52), (15, 30, 60), (14, 28, 43)

1. A. (11,22,44)
2. B. (13,26,52)
3. C. (15,30,60)
4. D. (14,28,43) (Correct answer)

Correct Answer

Option D — (14,28,43)

Detailed Solution & Explanation

The correct answer is (14, 28, 43).

Key Points

• In the other three sets each number is a doubling of the previous one — the pattern is n, 2n, 4n:
  • (11, 22, 44) → 11 × 2 = 22, 22 × 2 = 44 ✓
  • (13, 26, 52) → 13 × 2 = 26, 26 × 2 = 52 ✓
  • (15, 30, 60) → 15 × 2 = 30, 30 × 2 = 60 ✓
• In (14, 28, 43) the first step holds (14 × 2 = 28) but the second fails: 28 × 2 = 56, not 43.

Additional Information

• The trap is that the odd set satisfies the rule partially. Always test every step of the pattern, not just the first — a set that begins correctly is the most convincing distractor available.
• Number-classification sets may group by ratio, by difference, by being multiples of a common factor, or by shared digit properties. Check ratios first when the numbers grow quickly.
• Here 43 is also prime, while 44, 52 and 60 are all composite — a second, independent reason the set stands apart.

प्रश्न (हिन्दी में)

कौन सा संख्या समूह अलग है? : (11, 22, 44), (13, 26, 52), (15, 30, 60), (14, 28, 43)

1. A. (11,22,44)
2. B. (13,26,52)
3. C. (15,30,60)
4. D. (14,28,43)