61 : 121 :: ? : 337
ক
211
খ
222
গ
220
ঘ
240
সঠিক উত্তর: 211
As, 61 = (4)3 - 3121 = (5)3 - 4
and 337 = (7)3 - 6
Therefore, ? = (6)3 - 5 = 211