If a:b=1:3,b:c=5:7 ,then what is the value of a:b:c?
সমাধান
সঠিক উত্তর: Option C
এখানে ,
a:b=1:3
=(1×5):(3×5)
=5:15
এবং b:c=5:7
=(5×3):(7×3)
=15:21
a:b:c=5:15:21
a:b=1:3
=(1×5):(3×5)
=5:15
এবং b:c=5:7
=(5×3):(7×3)
=15:21
a:b:c=5:15:21
