Question

In which of the following sets, are the numbers in proportion?
(1) 5, 10, 15, 20 (2) 5. 20, 20, 100
(3) 5, 10, 10, 20 (4) 10, 20, 30, 40
plz explain it
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Answer 1

Answer:

option no. 3 is answer

5 - 10 - 10 - 20

Step-by-step explanation:

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