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Earn +20 ptsQ: What is the Next number 3 9 21 39?
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What is the next number in this sequence 9 3 3 9 21?
39. The rule here is starting with the number 9, add (-6 + sequence number * 6). 9 + (-6) = 3 3 + 0 = 3 3 + 6 = 9 9 + 12 = 21 21 + 18 = 39 39 + 24 = 63
What is the next number in the sequence 3-15-6-30-21?
The next number in the sequence 3-15-6-30-21 is -207.
Are 21 and 39 relatively prime?
21 = 3 x 7 39 = 3 x 13 So 21 and 39 are not relatively prime as they are sharing a common factor: 3
Which number should come next in the series 1-3-6-10-15-?
The next number is -21
What is the next number in the number pattern 3 6 10 15?
21: (3)+3=(6)+4=(10)+5=(15)+6=(21)
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