Masses of 3 wires of same metal are in t...

Masses of 3 wires of same metal are in the ratio `1 : 2 : 3` and their lengths are in the ratio `3 : 2 : 1`. The electrical resistances are in ratio

`1: 4: 9`

`9: 4:1`

`1:2:3`

`27:6:1`

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