Ask a New Question

Question

2. What is the 25th term of the sequence 3, 6, 11, 18, … ?
4 years ago

Answers

oobleck
Look at the differences: 3,5,7,...
So the terms are
3, 3+3, 3+3+5, 3+3+5+7, ...
The sum 1+3+5+... = n^2
so, 3+3+5+7+... = n^2+2
The 25th term is 25^2 + 2 = 627
4 years ago
Sandile
Hloniphile
4 years ago

Related Questions

find the 25th term of a geometric sequence having a common ratio r=1/4 and term a=3 Find the sum of the 25th term to 50th term of the arithmetic progression 28,23,18, ... find the 25th term of the arithmetic sequence 24, 19, 14, 9 ... The 25th term of an A.P is 173. Find the sum of the 7th and 15th term if the common difference is 7 Find 25th term of sequence the following 0.3, 0.9, 1.5, 2.1 Find the 25th term of an A.P if the second term is 18 and the common difference is 7 What is the 25th term of the square sequence? What is the 25th term in the sequence 6, 2, -6, -2 Helppppppppppppppppppppppppppppppppppppppppppp... -1,3,7,11 What is the 25th term? Find the 25th term of the sequence described below, where n represents the position of a term in the...
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use