Which of the following is/are true?( )Ⅰ. 25 is a term of the sequence.Ⅱ.The sequence has 10 negative terms.Ⅲ.The sum of the first n terms of the sequence is n2−18n.某数列的第n项为2n−19,下列何者正确?( )Ⅰ.25为该数列的其中一项Ⅱ.该数列有10个负值项Ⅲ.该数列的首n项之...
The first four terms of a sequence are shown above. Which of the following could be the formula that gives the nth term of this sequence for all positiveintegers n?Miguel is 180 centimeters tall. At 2:00 p.m. one day, his shadow is 60 centimeters long, and the shadow of a nearby f...
百度试题 结果1 题目In the sequence 3, 6, 9, 12,..., which term is 30? A. 9th B. 10th C. 11th D. 12th 相关知识点: 试题来源: 解析 B。解析:这个数列的通项公式是 3n,3n=30,n=10。反馈 收藏
How many of the first 100 terms of this sequence are multiples of 5?Answer:( ). A.10 B.7 C.2 D.0 2 10.Consider the sequence 1,3,4,7,11,18,29……,in which each term is the sum of the two previous terms after the first two terms. How many of the first 100 terms of...
which each term is the sum of the two previousterms after the first two terms.How many of the first 100 terms of the this sequence are multiples of 5?Answer:( ). (英汉小词典:sequence:数列;term:项;previous:前面的;multiples:倍数)
If the sum of the first n terms of a sequence is 6n2−n, which of the following is/are true?( ) Ⅰ. 22 is a term of the sequence. Ⅱ. The 1st term of the sequence is 5. Ⅲ. The sequence is a geometric sequence. 若某数列的首n项之和为6n2−n,则下列何者正确?( ) Ⅰ.22...
数列1,3,4,7,11,18,29,⋯ ,从第三项开始每一项都是前面两项的和,在这个数列的前100项中有多少项是5的倍数?答案:().(A)10 (B)7 (C)2 (D)0因为5的倍数个位需要是0或5,所以我们只需要看个位就可以了.这个数列1,3,4,7,11,18,29,⋯,中的每一项都是由前两项相加得到的(除了前两项以外...
The first term of a sequence is 2. All subsequent terms are found by adding 3 to the immediately preceding term and then multiplying the sum by 2. Which of the following describes the terms of the sequence? 选项: A、Each term is odd...
An arithmetic sequence is a sequence in which eachterm after the frstis equal to the sum of thepreceding term and a constant Ifthe list of lettersshown above is an arthmetic sequence, which of thefollowing must also be an arthmetic sequence?. 2p, 2r 2s, 2t 2ul. p-3,r-3, s-3,...
Which of the following statements about “plot” as a literary term is NOT TRUE? A. It is the plan or patterning of evens in a narrative. B. The plot emphasizes relationships of cause and effect. C. The plot provides an answer to “Why so”? D. The plot is a narrative of E. ven...