In this pyramid number if: 11 22 31 : 12 21 32 :: 9 12 21 : ?
Question: In this pyramid number if: 11 22 31 : 12 21 32 :: 9 12 21 : ?
[A].
2 7 14 
8 13 20 
6 15 18 
10 23 30 
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
