Question

What should the next number in the sequence be? 1, 3, 6, 10, 15, _____.

Answer 1

The next number should be 21

Answer 2

next number is 21

explanation:

Diffrence between numbers is incresing by 1

1+2=3

3+3=6

6+4=10

10+5=15

15+6=21

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