The first three terms in a pattern are shown in the image below. How many circles would be in the 5th term?

15

Step-by-step explanation:

the pattern is like this

start with 1 then add 2 equals 3

start with 3 then add 3 equals 6

so 6 add 4 equals to 10

and the 5th term will be 10 add 5

equals to 15

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