Question
Which of the following ratios are in proportion?
Answer: Option A
:
A and B
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A and B
Equivalent or equal ratios form a proportion. So, the first two given options are equivalent as they are equal in their simplest forms.
Alternatively, if the numbers are in proportion, then the product of 1st and 4th term is equal to product of 2nd and 3rd term.
Here, in first option this is satisfied as 13×42=14×39=546
Also in second option 11×3=1×33=33
In third and fourth option the given condition is not satisfied.
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