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9,13,17,21…. how is this changing?

Sagot :

Answer: Its adding 5 to each number

Step-by-step explanation:

Answer:

The number is increasing by 4

Step-by-step explanation:

Looking at the information provided, the number keeps increasing by 4.

9 + 4 = 13

13 + 4 = 17

17 + 4 =21

and so on. So therefore the answer to your question is that the numbers keep increasing by 4.