How To Find The Nth Triangular Number

Practice questions are at the end of the video.

Skip to:
00:00 Introduction
00:25 How to find the nth triangular number
01:37 Formula for finding the nth triangular number
02:38 Practice questions

Educational maths help videos to learn mathematics for school, exams or just general life. New videos added weekly.

LIKE AND SUBSCRIBE

Below are some links to products we recommend:

An excellent book if you're teaching mathematics or helping your children:

Follow us:

#triangularnumbers #nthterm #mathematics #learnmath #mathhelp #mathsteachingresources #GCSE

[mariathomas]

Of all the videos on the triangular number, only this made sense. Thank you

[drrubeenashaikh]

Very good video of the triangular numbers 🎉🎉

[educatesmyself]

Am really grateful, you made me understood it easily. studying from home.

[gogamash]

Interesting and well explained. I've never knew it was so simple 😀 Thank you

[satyaladdha]

Great explaination but please speak quicker. I had to watch on 2x of the normal speed.

[kings-Rex]

Best explanation I've seen. Thanks

[amitdesai]

Thanks
Really well explained
You helped

[rizzcapade]

Hi, thanks for the great video but I am somehow confused why 706 is not a perfect square. Can help to explain further, please?

[freddyfazbare]

thank you sooo much, my SEAL exam is coming up, could you help me in any way? I just need some ways to practice

[Acetyl]

Triangular, pyramidal, etc numbers have become a fixation lately.

[muhammadfiaz]

Hy I am from Pakistan. I am a mathematician. Can we become friends .