Question:
Identify the missing number:
12, 6, 18, 9, 27, ?, 81
लुप्त संख्या ज्ञात कीजिए:
12, 6, 18, 9, 27, ?, 81
Options:
- 12
- 13
- 18
- 27
- 12
- 13
- 18
- 27
Correct Answer: a)
Explanation:
Looking at alternate terms:
Odd positions: 12, 18, 27, 81…
Even positions: 6 (+3)= 9 (+3)= 12.
Hence the missing term is 12.
एकांतर (alternate) पदों को देखने पर:
सम स्थान: 6, 9, ? -> \(6 + 3 = 9\), \(9 + 3 = 12\)। अतः लुप्त पद 12 है।