2 years ago

Please help ASAP for the brainliest answer

Mathematics

2 answers:

Wittaler [7]2 years ago

7 0

Answer:

arithmetic sequence

Step-by-step explanation:

The next number is 21

Ronch [10]2 years ago

5 0

Answer:

Triangular Number Sequence

Step-by-step explanation:

This sequence is called the Triangular Number Sequence.

To find the next term, add 6 to 15.

The next term in the sequence is 21.

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