Find the 7th term in the sequence?
1.1, 2.2, 3.4, 4.7.....
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tìm số thứ 7 của dãy số.
1.1 ; 2.2 ; 3.4 ; 4.7 ; ...
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a) find the next two term in the sequence: 1; 4; 9; 16; 25;....;.....;
Answer:
b) find the smallest two-digit number whose number is 7 times the sum of its digits?
Answer:
Find the 100th term of the number sequence:1;5;9;13;17;...
Which term is number 497 ?
all positive integers appear in the sequence 1,2,2,3,3,3,4,4,4,4,..,and each positive integer k appears i the sequence k time . in the sequence, each term after the first is greater than or equal of the term before it. if the intrger 12 first is appears in the sequence as the nth term ,what is the value of n ?
A)62 B)66 C) 65 D)67 E)64
a sequence of numbers is given as follow 1,3,5,7,….. find the 205th term
Lời giải:
Số thứ nhất: $1=2\times 1-1$
Số thứ hai: $3=2\times 2-1$
Số thứ ba: $5=2\times 3-1$.
..................
Số thứ 205: $2\times 205-1=409$
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Cách hai:
Gọi số thứ 205 của dãy là $x$. Dãy trên là dãy cách đều nhau 2 đơn vị nên:
$(x-1):2+1=205$
$(x-1):2=205-1=204$
$x-1=204\times 2=408$
$x=408+1=409$
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Use these term-to-term rules to find the first five terms of each sequence. a) Start at -3, add 2, then multiply by 3. b) Start at 4, multiply by -2, then add 5. c) Start at 94, subtract 2, then multiply by 2. d) Start at -100, multiply by 3, then add 3.
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Use these term-to-term rules to find the first five terms of each sequence. a) Start at -3, add 2, then multiply by 3. b) Start at 4, multiply by -2, then add 5. c) Start at 94, subtract 2, then multiply by 2. d) Start at -100, multiply by 3, then add 3.
a. (-3 + 2)x 3 = -3
b. 4x(-2) + 5 = -3
c.( 94 - 2)x 2 = 184
d. -100x3 + 3 = -297
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Find the next term of the following sequence:
Tìm số hạng tiếp theo của dãy số có quy luật sau:
2017, 2016, 2012, 2003, 1987, ?
ui cái này dễ wá trời lun
2017, 2016, 2012, 2003, 1987, 1962
cách làm : 2017-12=2016
2016-22=2012
2012-32=2003
2003-42=1987
=>số ? là : 1987-52=1962
đúng thì tick cho nhé
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The rule tells you what to do to each term to obtain the next term in a sequence is
A. Term-to-term B. Position-to-term rule
Toán bằng tiếng anh nhé
Anna wrote a sequence of numbers using the rule " subtract 8". The first two terms in her sequence were 2017 and 1999. Which number below is one term of Anna's sequence ?