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Q.

State true or false.


72:84 and 186:217 are in proportion.


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a

True

b

False 

answer is A.

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Detailed Solution

We have to find that 72:84 and 186:217 are in proportion or not.
Applying the means-extremes property, we get,
Product of means,
⇒84×186  
⇒15624  
Product of extremes,
⇒72×217   ⇒15624  
Thus, product of means = product of extremes.
Hence, it is true that 72:84 and 186:217 are in proportion.
Therefore, option 1 is correct.
 
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