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Which number does not belong:3,6,9,12,30
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4 votes
Which number does not belong:3,6,9,12,30

User Renaud Boulard
by
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1 Answer

2 votes

we have the sequence

3,6,9,12,30

Remember that

3,6,9,12,... ----> is an arithmetic sequence

the next number would be 15

therefore

the answer is 30

User Willa
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