0
Still curious? Ask our experts.
Chat with our AI personalities
MaxineI respect you enough to keep it real.
Chat with Maxine
BlakeAs your older brother, I've been where you are—maybe not exactly, but close enough.
Chat with Blake
ProfessorI will give you the most educated answer.
Chat with ProfessorAdd your answer:
Earn +20 ptsQ: Is 19 a triangular number
Write your answer...
Submit
Still have questions?
Continue Learning about Math & Arithmetic
Is 190 a triangular number?
The explicit formula of a triangular number is:(n + 1 choose 2) which is equivalent to (n + 1)!/(2!(n + 1 - 2)!) = (n + 1)!/(2!(n - 1)!)Assume that 190 is a triangular number. Then:190 = (n + 1)!/(2!(n - 1)!)190 = n(n + 1)/2380 = n(n + 1)380 = n² + n0 = n² + n - 3800 = (n + 20)(n - 19)So n = -20 and n = 19But n has to be positive since n determines the nth triangular number. Therefore, n = 19.Therefore, 19 is a triangular number.
Is 63 a Triangular Number?
Is 63 a triangular number I think it is a triangular number.
What is a number that is a triangular number and a triangular number?
013
Is 23 a triangular number?
yes it is a triangular number
Is 18 a triangular number?
No, 18 is not a triangular number.
Trending Questions
What is the square feet area of a room 16 feet by 10 feet?
What is the Prime numbers between 70-75?
What is the standard form of 7000 thusands?
How many times does 16 go into 146?
Postage to mail a 6 inches by 9 inches letter?
What conclusion can you draw about a fly?
Where can i purchase ten dollar bills?
What is 643.6 converted to a fraction?
What is 3 over 2x -15 equals negative 12?
Why are there so many 1967 pennies?
What is minus 40 degrees Celsius in Fahrenheit?
What is 10350725 in word form and expanded form?
What is the name of the ten sides shape called?
What type of signis shaped like a triangle with one angle pointing down?
What are the synonyms for the word aim?
How many hours does 1000 seconds equal?
What is 12-4x5?
If I was Traveling at 0.4 inches per second how long would it take to go one foot?
If you have 100 gallon of 32 percent nitrogen fertilizer and want to convert it to 28 percent nitrogen fertilize how much water do you add?
How many times does 49 go into 220?
Copyright ©2025 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.