Maths / संख्या पद्धति
QID: #48189
यदि a : b = 7 : 9 तथा b : c = 15 : 7 हो, तो a : c क्या है?
Choose Your Option
A. 5 : 3
B. 7 : 21
C. 3 : 5
D. 7 : 15
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