Fill in the blanks.
(i) The perimeter of circle and its diameter vary __P__ with each other.
(ii) If two quantities p and q vary inversely with each other then __Q__ of their corresponding values remain constant.
(iii) When x and y are in indirect proportion and if y doubles then x becomes __R__
| P | Q | R | |
| A | Inversely | Ratio | Double | 
| B | Directly | Product | Half | 
| C | Inversely | Ratio | Double | 
| D | Directly | Product | Half | 
A and c , b and d are same.
Ans 2:
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Class : Class 9 
                                                                                                
                                                                                                its not fair if we mark option d then they say correct answer is option b and if we mark option b then they say that option d is the correct answer.