0
Anonymous
9-3=6
6-3=3
3-3=0
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3 4 5 6 The next number is 1 plus the previous number So the pattern rule is the next number is n + 1
the answer is 72.:)
21: (3)+3=(6)+4=(10)+5=(15)+6=(21)
34
10.1(+2) 3 (+3) 6 (+4) 10