Question

Which of the following are in proportion?
2,3,20,30
3,4,15,18
1,3,11,22
2,5,40,80.

Answer 1

Answer:

2,3,20,30

Step-by-step explanation:

2×30=3×20

product of extreme=product of mean

Answer 2

Answer:

2,3,20,30

Step-by-step explanation:

Step 1:2&30 both lie in exterior

2×30=60

Step 2:3&20 both lie in interior

3×20=60