Maths / Ratio and Proportion / Proportion

QUESTION
 

Identify the pair that is not in proportion.

OPTIONS
A. 

2 : 3 & 4 : 9

B. 

3 : 2 & 6 : 4

C. 

5 : 7 & 10 : 14

D. 

6 : 7 & 18 : 21

Right Option : A

EXPLANATION
Explain TypeExplanation Content
Text

Product of means  =3 times 4 =12

Product of extremes  =2 times 9=18

Since, product of means  neq   product of extremes

Hence, ratios  2:3: : and : : 4:9  are not in proportion.

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