In this pyramid number if: 11 22 31 : 12 21 32 :: 9 12 21 : ?

In this pyramid number if: 11 22 31 : 12 21 32 :: 9 12 21 : ?
Correct Answer 8 13 20
মোঃ আরিফুল ইসলাম
Feb 20, 2025



