What are the nth terms of the sequence 2 6 12 20?

What are the nth terms of the sequence 2 6 12 20?

Find the nth term of the sequence: 2, 6, 12, 20, 30… Clearly the required sequence is double the one we have found the nth term for, therefore the nth term of the required sequence is 2n(n+1)/2 = n(n + 1).

What is the 20th nth term?

The 20th term is 32 . Hopefully this helps!

How many terms are there in the sequence 3 6 9 12 and 111?

Thus, number if terms is 37. Hope it helps.

What is the next square number after 25?

Informally: When you multiply an integer (a “whole” number, positive, negative or zero) times itself, the resulting product is called a square number, or a perfect square or simply “a square.” So, 0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, and so on, are all square numbers.

What is the 20th term of the Fibonacci sequence?

The 20th Fibonacci number is 6,765.

What is the 20th term of sequence defined by?

We need to find 20th term i.e. a20 Let an = (n 1) (2 n) (3 + n) putting n = 20 in (1) a20 = (20 1) (2 20) (3 + 20) = (19) ( 18) (23) = 7866. Hence the 20th term is -7866.

What is 20th term of AP?

Hint: As we know that the given series is in AP, we will directly use the formula of AP, that is, l – (n-1)d to find the 20th term from the last of the arithmetic sequence given. Therefore, the 20th term from the last of the arithmetic sequence 5, 10, 15, 20 …… 150 is 55. Hence, option (c) is the correct answer.

How many terms are there in the sequence 3 6 9 111?

Thus, the given sequence contains 37 terms.

How to give an expression for the nth term?

Question 706720: Give an expression for the nth term: 2, 6, 12, 20, 30, 42…is n^2+n but how did they get that answer? You can put this solution on YOUR website! Give an expression for the nth term: 2, 6, 12, 20, 30, 42…is n^2+n but how did they get that answer?

What is the nth term rule of the quadratic sequence below?

SOLUTION: What is the nth term rule of the quadratic sequence below? 6 , 12 , 20 , 30 , 42 , 56 , 72 , . . . Practice! Question 1116736: What is the nth term rule of the quadratic sequence below?

What is the formula for the n th term?

Given the sequence 2, 6, 12, 20, what is the formula for the n th term and for the sum to n terms? Examine the differences between successive elements to find: Given the sequence 2,6,12,20, write it out in a line with gaps between each term: Add a line of term below listing the differences between each pair of terms: