Tags Math and Arithmetic Algebra

Animals & Plants Arts & Entertainment Auto Beauty & Health Books and Literature Business Electronics Engineering & Technology Food & Drink History Hobbies Jobs & Education Law & Government Math People & Society Science Social Studies Sports Travel & Places

0

Subjects>Math>Math & Arithmetic

What is the next number in the series 3 6 9 15 21?

Updated: 12/18/2022

Wiki User

∙ 12y ago

Best Answer

The next number is 18.

This is obtained by fitting the quartic polynomial

t(n) = (-n4 + 12n3 - 47n2 + 84n - 36)/4 for n = 1, 2, 3, etc.

Wiki User

∙ 12y ago

This answer is:

Add your answer:

Earn +20 pts

Q: What is the next number in the series 3 6 9 15 21?

Write your answer...

Submit

Still have questions?

imp

Continue Learning about Math & Arithmetic

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 sequence 3-15-6-30-21?

The next number in the sequence 3-15-6-30-21 is -207.

What is the next number in the series 21 24 84 96?

291

What is the next number in the number pattern 3 6 10 15?

21: (3)+3=(6)+4=(10)+5=(15)+6=(21)

Which number completes the series 1 3 6 10 15?

It is: 21

Related questions

Which number should come next in the series 1-3-6-10-15-?

The next number is -21

The next number in the series 0 1 3 6 10 15 21 is?

28

What is the next number in the series 1 9 18 25 27 21?

15

What is the next number in the series 1 3 6 10 15 21 28 36 45?

55

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.

What is the next number in this series 6 13 18?

21

The next number in the series 13 1816 21 19?

24

What is the next number in the series 21 24 84 96?

291

Which number should come next in the series 8 13 21 26 31?

the answer will be 21

The next number in the series 13 18 16 21 19 is?

24

What is the next number in the number pattern 3 6 10 15?

21: (3)+3=(6)+4=(10)+5=(15)+6=(21)

Which number completes the series 1 3 6 10 15?

It is: 21

Trending Questions

What is the 24th triangular number? How much weight per square foot can three quarter inch particle board support? Is a negative number times a negative number equal to a positive or a negative number? Is Angle Is made from combining two rays at their endpoints? What is the two angles of a triangle that do not form a linear pair with a given exterior angle? How do you write one million as a whole number? How many times does 4 go into 564? Solve2x plus 5Y equals 45? One half of the students in alex's science class are girls one third of the girls in the class have blonde hair if 10 girls do not have blonde hair how many students are in alex's science class? What fractional part of a foot is a inch? What is 456 345? When was In His Image created? How many travel agents in the US? What is a palindrome for the word female sheep? When was the first set of measurements created? What is 96 over 108 in lowest terms? What is 0.167 as a fraction? Are there any prime numbers divisible by three? What is the square root of - 26? What is 4.75 percent as a fraction?

Previously Viewed

What is the next number in the series 3 6 9 15 21?

Unanswered Questions

What are 5 tips for financial success in your 20s? How many sides do 4 pentagons and 5 decagons have in all? What ingredients are typically used in Mixture Namkeen? Is Mixture Namkeen spicy, and are there different flavor options? What are the popular ways to enjoy Mixture Namkeen? What are the most common mistakes people make when hiring cleaners for their homes or offices? What health issues are common in Himalayan kittens in Bangalore? Do you use OEM (Original Equipment Manufacturer) glass for replacements?

Resources

Top Categories

Product

Company

Copyright ©2024 Infospace Holdings LLC, A System1 Company. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers.