1,3,6,10,15,21,? WHATS THE NEXT NUMBER

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anonymous · Answer 1 · 2012-10-09T19:08:55+0000

next=28

1, 3, 6, 10,15,21...

differ tween 2 numbers=2, 3, 4, 5, 6,

so add 7 tu get next number

anonymous · Answer 2 · 2012-10-09T19:15:51+0000

the next number is 28 because 1 and 3 have 2 between them, 3 and 6 have 3 between them,6 and 10 have 4 between them, 10 and 15 have 5 between them, 15 and 21 have 6 between them 21 and 28 have 7 between them.

1,3,6,10,15,21,? WHATS THE NEXT NUMBER

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