Question

7. The sub duplicate ratio of 16:49 is (a)4:7,(b)256:2401,(c)4:9,(d) None of these.
8. Duplicate ratio of 4 : 5 is (a)16:25,(b)2:15,(c) 64: 125, (d) None of these.
9. Triplicate ratio of 3 : 5 is (a) 27: 125, (b) 9:25, (c) 3:5'. (d) 125:27.
10. The sub-triplicate ratio 8 : 125 is (a) 2:6, (b) 2:5, (c) 5:2, (d) None of these.
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Answer 1

samajh me hi nahi as raha hai