1.

यदि a:b=4:5,b:c=6:9,c:d=15:19 तो a:b:c:d का मान होगा

A. 8:10:15:19
B. 10:11:15:19
C. 8:9:15:19
D. 19:15:6:8
Answer» B. 10:11:15:19


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