2 years ago

1,6,15, ?, 45, 66, 91a. 25b. 26d. 28c. 27

Mathematics

1 answer:

Angelina_Jolie [31]2 years ago

8 0

Answer:

d.28

Step-by-step explanation:

The pattern is like this : add 5,9,13,17,21,25

so you need to add 13 to 15

and I believe you are missing a number

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