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WHAT is the next sequence

WHAT is the next sequence
74.0k views
5 votes
WHAT is the next sequence

WHAT is the next sequence-example-1
User Andrey Korneyev
by
8.0k points

2 Answers

3 votes

Answer:

21

Explanation:

a1=1

a2=a1+2

a3=a2+3

a4=a3+4

...

a(n)=a(n-1)+n

User Voronnenok
by
8.1k points
6 votes

Answer: its 21

Explanation:

the sequence goes up by 1 each time

User Javito
by
7.7k points
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