जर A ∶ B = 3 ∶ 2, B ∶ C = 7 ∶ 5 आणि C ∶ D = 10 ∶ 3, तर A ∶ D किती असेल?

1
7 ∶ 1
2
1 ∶ 7
3
4 ∶ 3
4
3 ∶ 4

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