Answer to: Find the first three terms of the sequence a_n = {(n + 4)!} / {n!}. By signing up, you'll get thousands of step-by-step solutions to...
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The first three terms of a geometric sequence are the integers a,720, and b, where a()720()b. What is the sum of the digits of the least possible value of b?(A) 9(B) 12(C) 16(D) 18(E) 21 相关知识点: 试题来源: 解析 (D) 18 该几何数列的公比必须是720的因数,为了使第...
Write the fourth term in the sequence, defined as below: (i)an=5n−2 View Solution Find the first four terms of the sequence defined bya1=3andan=3an−1+2, for alln.1. View Solution Doubtnut is No.1 Study App and Learning App with Instant Video Solutions for NCERT Class 6, Clas...
Given a(n) = n(n+1) substitiuting n = 1,2 and 3 , we get a(1) = 1 (1 + 1 ) = 2 a(2) = 2 (2 + 1) = 6 a(3) (3 + 1) = 12 therefore The first terms of the given sequence are 2 . 6 and 12.
The sum of the first three terms of a geometric sequence with first term 3 and common ratio 2 is ___. A. 15 B. 21 C. 24 D. 27 相关知识点: 试题来源: 解析 B。解析:First find the second term which is \(3 * 2 = 6\). Third term is \(6 * 2 = 12\). Then use the ...
结果1 题目 23. S is a geometric sequence The first three terms of S are (x + 18), x and (2x -15), where x is positive.(a)Find the value of x.9(b)Find the 5th term of S1/3 相关知识点: 试题来源: 解析 91/3 反馈 收藏 ...
Sequences can always have gaps;A sequence can issue duplicate values.;A sequence's unallocated cached values are lost if the instance shuts down
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