Which of the following bpairs is different from the others and why? 7:8 &49:56 8:9&64:81 4:5&5:4 7:9&14:18

Dear Student,

1 7:8 and 49:5678 and 495678 and 78They are in proportions.2 8:9 and 64:8189 and 648189 and 6481They are not in proportions.3 4:5 and 5:445 and 54They are not in proportions.1 7:9 and 14:1879 and 141879 and 79They are in proportions.Thus pair given in b and c are different from pairs given in a and d because b and c are not in proportion.

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