Q.147 : यदि a/b =7/9 और b/c=3/5 है तो a:b:c बराबर है ?

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Q.147 : यदि a/b =7/9 और b/c=3/5 है तो a:b:c बराबर है ?
(a) 5:6:78
(b) 7:9:15
(c) 12:23:45
(d) 7:8:19

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Answer :7:9:15

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