Question

यदि a : b = 7: 9 तथा b: c = 5:7 तो a: c का मान ज्ञात
कीजिए?
(A) 7:21
(B) 7:15
(C) 5: 9
(D) 3.5
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Answer 1

Answer:

5.9 I hope it is right answere