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Q: What is the nth term for the triangular numbers 1 3 6 10 15 21?
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The first 6 triangular numbers are?

1, 3, 6, 10, 15 ,21 The nth term for the sequence (where you replace n with the term you want to find) is: (n(n+1))/2


What is the sequences in a triangular number?

1, 3, 6, 10, ... The nth term is n*(n+1)/2


What are the1st 6 trangle numbers?

They are 1, 3, 6, 10, 15 and 21.The nth triangular number is n*(n+1)/2.


Numbers 1 3 6 10 15 pascals triangle?

Well...the fifth row is 1 5 10 10 5 1...but to possibley solve a problem you need a formula for example (x+y)^2 * * * * * No, these are triangular numbers. The formula for the nth term is t(n) = n(n+1)/2 They are called triangular numbers because if you make one mark on the first line, two marks on the second, three on the third, etc you will generate these numbers and with each line the marks form a triangular shape.


What is the nth term of -10 -8 -6 -4 -2?

The nth term is (2n - 12).


What is the nth term for 10 6 2 -2?

It is: nth term = -4n+14


How do you find the nth term?

Say if you had the pattern 15 20 25 30 35 40 45 50 To find the nth term you have to see what the gap between the numbers is. In our case this is 5. Then you have to find out what the difference between the gap and the first number. In this sequence it is 10. So your answer would be..... 5n+10 That's how you find the nth term.


What is the nth term of -8 2 12 22?

The sequence has a difference of 10, so the nth term starts with 10n. Then to get to -8 from 10 you need to subtract 18. So the nth term is 10n - 18.


What is the nth term of 10 13 16 19?

The nth term is 3n+7 and so the next number will be 22


What is the Nth term of 4 7 10 13...?

The nth term is: 3n+1 and so the next number will be 16


What is the nth term formula for the triangle numbers 1 3 6 10 15 21?

(n^2+n)/2


What is the nth term for 26 18 10 2 -6?

The nth term in this arithmetic sequence is an=26+(n-1)(-8).