What will be the duplicate ratio of 2 : 7 ?A4 : 49B49 : 4C4 : 14D8 : 343Answer: A. 4 : 49 Read Explanation: Duplicateratio=ratioofsquaresDuplicate ratio=ratio of squaresDuplicateratio=ratioofsquaresDuplicate ratio of 2:7=22:72=4:492:7=2^2:7^2=4:492:7=22:72=4:49 Read more in App